THE PANARACER DIRTY REIVER
We’re thrilled to continue our partnership with the team at Focal and to welcome you all to this milestone event, celebrating a decade of adventure, camaraderie, and the spirit of gravel riding.
Over the years, the Dirty Reiver has grown into one of Europe’s most anticipated gravel events, attracting riders from all corners of the globe. This year promises to be extra special with a new start, fresh views and great challenges.
We’re also proud to introduce the new GravelKing X1 tyres, designed with the future of gravel riding in mind. These tyres offer the lowest rolling resistance of any GravelKing model and feature an aggressive tread design for unmatched performance across all types of gravel conditions. After gathering feedback from riders across the gravel spectrum, Panaracer has redeveloped the GravelKing range to incorporate the best innovations and technologies, ensuring you’re supported wherever you race or adventure.
Timed perfectly for spring 2025 and this year’s DR25, the new Colour Edition tyres bring a splash of personality to your ride, available in a vibrant range of colours to match your style. Dirty Reiver riders will be among the first in the world to experience this year’s special edition colours.
We look forward to seeing you on the trails and celebrating this incredible anniversary together!
Happy riding, The Panaracer Team
INTRODUCTION TO GRAVEL
Gravel has experienced a meteoric rise in recent years, opening up a whole new dimension to the sport of cycling. Today, events are held all over the world, with both international and regional series, along with an increasing number of races. In 2022, the first UCI Gravel World Championship was held, alongside the sport’s first “official” jersey awards.
The gravel scene owes much of its roots to the early events that emerged in America. Dirty Kanza, now known as Unbound Gravel, helped pave the way with its 200-mile ride through the Flint Hills, featuring challenging clay tracks and an emphasis on rider self-reliance. The focus was on having a great day of adventure on the bike, covering distances traditionally reserved for road rides.
As the movement grew, more people embraced the format, and bike development quickly followed. Major manufacturers began to take notice, and riders enjoyed the social aspect of the events—often lining up alongside former professional cyclists and sharing in the same challenging routes.
In recent years, bike technology has rapidly evolved to support the sport, with gravel bikes becoming more mainstream. Gone are the days of riding a hardtail MTB or a cross bike at gravel events. Today, modern gravel bikes feature frames that can accommodate wide 700c tires (40mm+), rims designed for these wider tires, and gear ranges that are more versatile, with many bikes now featuring a single front chainring to tackle varied terrain. In this rider’s guide we explore gear, tech, training and fuelling, as well as giving you a comprehensive walk-through of the event itself.
Despite recent challenges within the economy, gravel is continuing to grow. For many, it’s the sense of community where all riders are welcome; for others, it’s the wilderness experience they seek. Whatever your motives, gravel brings riders together in a way that few other sports do.
standing Gravel Grinder event.
The gravel tracks are hard-packed, wide and on the whole fast rolling, with only the occasional rougher section. They are equally suited to those planning a first event and for riders with more experience - after all this is the ‘Home of UK Gravel!”
THE EVENT OPTIONS
THE EVENT OPTIONS
DIRTY ONE THIRTY
The Dirty Reiver's little sibling spans 130km. While shorter, it’s still a challenging distance and often serves as a stepping stone for those aiming for the full 200km — or as a more manageable option for those who are feeling it when on the 200km.
If you're looking for a day in the saddle to test your gravel legs for the first time, this is the one for you. It’s a single loop through Kielder and Wark Forest’s varied gravel roads, with a stunning finish along the lakeshore.
THE EVENT OPTIONS
A great first time gravel challenge and a chance to experience the
The route follows large sections of the full 200km route, so you get to
This 65km loop includes one feed station and should be easily within range of modern e-bike batteries: all the fun of the Reiver - assisted!
KIELDER - WHAT’S ON SITE
Kielder is a remote village in rural Northumberland with very limited services. A small shop serving snacks is located next to the self-service fuelling station just outside the main village. The nearest larger stores are in Newcastleton, when heading in from the west, or Bellingham, from the southeast. We advise riders to bring everything they need for the weekend.
While the immediate area has few facilities, we have most of what you’ll need on-site throughout the weekend. The event centre offers a full range of catering, open from early morning to late evening - serving everything from breakfast to late-night meals. There will also be a barista coffee van on-site, as well as a fully stocked bar. Kielder Castle itself has a café with indoor seating, plus all the usual amenities like toilets and water.
New for 2025 is Team Cycles bike shop: their well-stocked shop is located adjacent to the event centre. They’ll be open throughout the weekend to assist riders and provide any last-minute purchases.
Fenwick’s will be offering their bike cleaning service to all riders, and our shower unit will be open all day on Saturday to help you stay clean and warm.
The Dirty Reiver is famous for its Sponsor Event Village, where you can take part in brand activities, see the latest tech, get your gears tuned, and meet ambassadors.
SIGN-ON AND CATERING
SIGN-ON/EVENT VILLAGE
The Event Village, Catering, Bar and Sign-On area are all located in the grounds of the iconic Kielder Castle.
Sign-on can be quite busy at times, especially early on the Saturday morning, so allow plenty of time for this - and for visiting the sponsor village.
Sign On Times:
Friday -10:00-22:00hrs
Saturday - 06:30-08:15hrs
CATERING
A full range of facilities at the Event Centre cater for a wide range of dietary requirements.
Podium Catering will be on hand throughout the weekend serving a choice of hot meals, including your post event hot meal. The on-site cafe in the Castle will also be open and hopefully will have the log fire burning!
The Stohk bar will be open throughout the weekend for the important pre and post ride hydration.
Opening times:
Friday -10:00-22:00hrs
Saturday breakfasts will be available early and for those riding the event there is a meal included in the entry. This is available from the Podium Catering tent, again with a range of diets catered for.
Saturday - 06:00-07:30hrs/12:00-23:00hrs
Northumberland Coffee will be on-site through out the weekend serving quality barista coffee and bakes from their Landrover Defender.
EVENT LOGISTICS
EVENT START
The event starts will be from 09:00 - 09:30 on Saturday 26th April.
For 2025 we will be grouping riders in a starting pen before setting onto the first neutralised section (approx 3km) of the course. Our first group will be for Pro/Elite/Team riders, followed by the faster amateur riders. Anyone wishing to be in these groups should make them selves known at registration on Friday.
All starts will be from in front of the event centre at Kielder Castle.
Further groups of riders will be set off in waves up until 09:15. After which social groups can role out at leisure until 09:30 when the start gate closes.
No riders are allowed to start the course after 09:30 as our safety teams will then be on course following the last groups.
Official timing will start at the end of the neutralised section and will be clearly marked. This will allow time for riders to space out and get into their rhythm before the climbing starts!
PARKING
Camping and camper van locations are within a 5-10 min easy pedal from the start so those arriving and staying on the Friday night should not need to move vehicles on the Saturday morning. Further details to follow in the newsletters.
For those arriving on the Saturday morning, riders should plan to be parked on site well in advance in order to make sure that there is enough time to prepare. Further details to follow in the newsletters.
STAYING ON SITE
Please note that accommodation in the area gets booked well in advance of the event!
Full details are available on the event website: www.dirtyreiver.co.uk with regular updates in the event newsletters.
Forestry England will provide some overflow camping and space for campervans - all on a first come basis when you turn up. Vans are charged at £15 per night payable at the ticket machine. Camping is £8 per person.
Please can we ask that all camper vans are on-site on Friday evening, this ensures that we can find you a suitable location. It also helps out parking team first thing on Saturday morning when things are very busy.
Full details will be circulated in our newsletters ahead of the event.
FRIDAY 25th April: SCHEDULE OF EVENTS
Our event village opens at 10am on Friday, 25th April, with brands offering a variety of activities to help you shake off the journey.
All rides are social, with opportunities to meet brand ambassadors, talk all things gravel, make new friends and preview parts of the course. It’s also a great chance to check your bike, gears and tyres after the trip to Kielder. All day:
• Lauf Loop - Come and try a Lauf Seigla on our special 5km loop, guided by Wahoo
• SRAM Scavenge Hunt - clues around the event centre with cool SRAM prizes
• 2:30pm: SRAM Women’s Ride – meet at the SRAM tent. Sign-up info in upcoming newsletters
• Throughout the day: Panaracer Tyre Challenge, Topeak Inflation Challenge, brand competitions, plus more
More rides and the full schedule will be confirmed in the April newsletter.
SATURDAY 26th April:
THE START
For 2025 we have pushed the start back to 09:00 to allow riders extra time to get to the event village. Please allow plenty of time to park, unpack and get ready. If you're signing on, note the sign-on times (06:30 - 08:15).
The start for our first 'Elite’ group is 09:00, behind our lead vehicle. The route is neutralised for the first 3km, then the timing officially starts.
Anyone wishing to be in this group should make themselves known at registration.
We will then operate further grouped starts at 1min intervals for riders.
For those looking for a more relaxed, social start we will keep the gate open from 09:15 - 09:30 to allow groups to roll out.
The start closes promptly at 09:30, after which no more riders can join the course.
GRAVEL BIKES
most off-road bikes can complete the course, some are definitely more suited to the event, especially when considering the time cut-offs in place throughout the day. In recent years, there has been a clear shift towards gravel-specific bikes. These bikes offer a balance of speed, comfort, and off-road capability, making them well-suited for the variety of terrain encountered during the event.
Lauf, a brand long associated with the Dirty Reiver, is known for its expertise in gravel bikes. Based in Iceland, they are returning this year with their gravel-specific model, the Seigla.
The Seigla is packed with innovative features designed to tackle the challenges of building a fully capable off-road bike that’s fast, comfortable, and able to handle wide-range, single-chainring gearing. With excellent tyre clearance, comfort front and rear, a short chainstay, and a long wheelbase, it’s the ideal gravel cruiser. But don’t just take our word for it—stop by the Lauf stand and try one for yourself!
Check out our podcast series for an in-depth chat with Lauf designer Benedikt Skúlason
INTERVIEW WITH GRAVEL AMBASSADOR: MADDY NUTT
We took the chance to chat to Lauf and Panaracer sponsored athlete, Maddy Nutt, ahead of the 2025 season.
Maddy has been competing at the top level in gravel racing for several seasons, with impressive results like winning the UCI Safari Gravel Race in Rwanda. A Panaracer Dirty Reiver veteran, she recently joined the Lauf team and is gearing up for a multi-discipline season. Maddy took a break from her busy training schedule to chat with us.
Maddy, first of all, congratulations on a successful 2024 season. What have been the standout moments for you?
From a bike perspective, my standout moment was definitely the Safari Gravel Race—a UCI win. Without a doubt, this has been my best result to date. It was such a hard race, and I was severely cramped with 12km to go. I went from
thinking, “I’m going to win my first UCI race" to "I’m actually not going to finish," but then I managed to make it to the finish line and take the win. I think I was lucky with the course design as it finished on a 10km descent so I didn’t have to pedal much to get to the line.
Overall, 2024 was a very up-and-down year for me - I had a big break from the bike with pericarditis, so I missed a fair bit of racing. But coming back from that and still getting good results was a huge personal win. Overall, I had a very positive season.
For 2025, you’ve signed to ride for Lauf bikes. How did that partnership come about?
I first spoke to Lauf when I decided I wanted to pursue gravel. At the time, I was racing on a multi-discipline team, and that's when I realised how much I loved gravel racing. Lauf was one of the brands I was talking to, alongside Ribble Collective, who I ended up signing with that year.
So the relationship with Lauf was already there, and I’ve always been drawn to their bikes, especially the suspension forks. As a brand, Lauf is gravel-first, and I am too—I’ve never really raced much on the road, and I have far more experience riding gravel. So the brand really suits me.
At the time, the opportunity with Ribble was too good to turn down, and I felt I wasn’t quite in the position I am now, with the race results, accumulated experience and social media following I’ve built. What I can offer a sponsor now is a much stronger package, which works well for a privateer.
Lauf really align with the brand image I’ve built, so it feels like a natural fit. I reached back out to them and Lauf were happier to hear from me than I expected! That connection was rekindled and now here we are.
You will be riding the Lauf Seigla at events and races this year. Which model and colour will we be looking out for?
For 95% of my racing, I’ll be using the Seigla with the Grit suspension fork. It’s a nice Glossy White with SRAM XO1 mountain bike gears. I also have a Moss Green, fully rigid version. Both have tan sidewall Panaracer Gravel King X1
tyres and look amazing.
Let’s talk about the forks and how comfortable the frame is to ride?
One thing I notice most is that I don’t feel any vibrations. The ride is super smooth. I did a course yesterday that I’ve ridden many times before with a sharp, technical climb. In the past, I’ve had to put a foot down because it’s so steep, and it’s tricky to pick a good line. On the Seigla, it was much easier. I could ride up it without thinking too much.
Over the years, I’ve realised that one area I can improve as a gravel rider is on technical descents. I’m a relatively technical rider, but I can be cautious descending. The Seigla has transformed my enjoyment of descents. The Grit Fork is an absolute dream, and it’s really taken my riding up a notch. The suspension gives me much more confidence. When descending, I brake way less. I used to always scrub speed before hitting rocks or bumps. Now, I don’t feel the need to do that—I have more control and can do it more safely.
My back is also happier. When I used to ride rigid forks, I’d feel a lot of impact, especially during races like the Migration Gravel Race, which is not smooth. In 2023, Lachlan Morton chose to ride the course on a mountain bike, which I totally get, but this Lauf bike is perfect for that kind of race. The Rift in Iceland also left me with a sore back, but now I know I have a bike that’s way more suited to the gravel I enjoy most.
Has the added comfort of the bike resulted in faster times, or has it helped more in terms of fatigue and being fresher over the distance?
I went on a ride yesterday and got a few personal records, so yes, maybe— though I’ve only had the bike for a few weeks. I definitely think it’s helping me build my confidence. For me, there will be a big advantage when racing, especially on technical, steep descents and rougher trails. The difference the bike makes could be the difference between a certain result.
Looking ahead to the Dirty Reiver, a 200km off-road gravel event, what are your thoughts on tackling this on the Seigla?
For the Dirty Reiver, the perfect combination would be the Seigla with the Grit
Fork. It’s a big day, so the comfort of the fork will make a big difference. Plus, there’s a fast, technical descent early on, and this bike will really help there.
How has the change in bikes been?
I found it easy to adapt. It’s instantly made riding easier, with less fatigue and no back issues. I really love this bike. I’ve always enjoyed off-road riding, but this bike has something extra. For example, tomorrow I’ve got a 3-hour ride planned, and I’m now plotting routes with steeper descents and more technical terrain than I usually would.
What setup will you be using for Dirty Reiver? (Tyres/bottles/feedbag/any customisations)
The bike is very smooth to ride, and the tyre clearance is huge. I currently have 40mm Panaracer X1 tyres on, which I raced on last year, but the clearance is so big I could definitely go wider. For Dirty Reiver, I think I’ll stick with the 40mm, but for events like Migration Gravel Race or The Rift, I might run wider tyres.
I’ll probably go with a combination of bottles and vest. I’ll also use the larger MTB cassette. The Seigla has top tube bag mounts, so I’ll likely use a bag filled with sweets and gels. Oh, and I had a hot cross bun last year—maybe I’ll butter it this time!
What other bikes in the Lauf range are you riding?
I’ve got the Uthald road bike for training and I will also be getting their mountain bike. The road bike is really lightweight, perfect for climbing, which is exactly what I need for my training. It’s super comfortable, has a great groupset, and fast wheels—it’s ideal for me.
What are your main gravel focuses for 2025, and how can people follow your progress?
I’m racing in Morocco in about a month, then Dirty Reiver. My main goals are stage races: Migration Gravel Race, The Rift MTB Race, Atacama Spirit, and Gravel Burn.
You can follow me on Instagram (@maddy_nutty) and YouTube (just search Maddy Nutt).
TYRE CHOICES
Choosing the right tyre for you / What Tyre pressure should I use for the big day??
What tyre works best for riding the Dirty Reiver is the most asked question we get. Right behind, what tyre pressure should I run?
Because of this and the variety of Gravel riding and racing we all do, Panaracer has a whole family of tyres to choose from. For many years the GravelKing SK has been the outstanding 1st choice for riders, but in 2024 Panaracer introduced a complete revision of the technologies in the range and added a new model, which is now the “Go-To” model for Dirty Reiver. The new GravelKing X1 features an allnew tread design that grips incredibly well on corners and is also our fastest tyre in a straight line. The new TuffTex technology has also increased puncture protection in both the standard and Plus versions (Plus models have a double layer of TuffTex). Our Plus models are there to give you the added confidence to get to the end, without the anxiety of getting a flat. The X1 standard would be my top recommendation of tyre for a supple and comfortable ride, whichever course you choose.
Then the only choice you must make is the colour of the side wall. Brown instantly adds 10 style points to your ride. Then we come to the biggest question – Tyre pressure – My answer is always, ride with what you know, if you usually ride with 35psi, then ride Dirty Reiver at 35psi, by the time youget to the start line, you should be very familiar with how your bike feels. In the weeksleading up to the event, you might like to try a few different pressures, but I can highly recommend using the Zipp tyre pressure calculator. If the weather is a little soggy, then you can consider taking a couple of psi out.
https://axs.sram.com/guides/tire/pressure
Dirty Reiver riders get a special event 30% discount at www.panaracer.co.uk and using the code DR30 – so get set up ahead of the event, we are proud to support all riders at thisyears Dirty Reiver and will also be on site with help and advice.
Happy Riding – Blair Morgan - Panaracer
TYRE PRESSURE
Mastering the Art with Topeak
Gone are the days when tyre pressure was given little attention. In the lead-up to events, it’s now commonplace for tyre choice and pressure selection to dominate conversations. However, it doesn’t need to be the "dark art" that some make it out to be.
Understanding tyre pressure starts well before the Dirty Reiver. Begin at home, weeks in advance, by investing in a quality track pump with an accurate gauge. Since gravel bikes rarely require inflation beyond 60 psi, a pump with a gauge that measures up to 200 psi can make setting precise pressures unnecessarily challenging. But fear not! Pumps like the Topeak Joe Blow Sport Digital feature a built-in digital pressure gauge and an air release valve, allowing you to inflate your tyres to the exact desired pressure with ease.
Once you have your starting point, set off on your ride as usual. We recommend covering a variety of terrains at different speeds while paying close attention to how your tyres feel. Over-inflated tyres will make your bike feel overly stiff, you may even notice the tyres bouncing off rocks and bumps. Under heavy loads and cornering, you might experience slipping as the tyre struggles to gain traction.
If this happens, stop and release some air from the tyres, typically reducing more from the front than the rear, as the rear carries more weight and requires slightly higher pressure. A digital pressure gauge makes this process much easier, allowing you to monitor precise pressure levels and make adjustments with accuracy. The Topeak Smart Gauge D2X Digital is perfect for this, as its compact and light enough to fit easily into a jersey pocket.
TYRE PRESSURE cont.
How do you know if you’ve let out too much air? An under-inflated tyre will feel unstable or "squirmy." You might experience tyre “burps” (when the tyre bead momentarily separates from the rim, allowing air to escape). Additionally, under-inflation can cause the rim to hit sharp objects like roots and rocks resulting to a puncture often referred to as a “snake bite”. While a softer tyre might feel grippy and comfortable, it significantly increases the risk of punctures, whether through "snake bites" or tyre wall tears. If this happens, slightly increase the pressure to find the sweet spot between "too hard" and "too soft."
Topeak’s range of hand pumps makes this process a breeze. The Gravel 2Stage pump features an innovative two-stage function that switches between high volume and high pressure for quick, stress-free inflation. The difference between an optimal and suboptimal tyre pressure can be as little as 1.5 psi, underscoring the importance of a precision measuring device like the Topeak D2X gauge.
Weather conditions play a significant role in tyre pressure selection. In dry conditions, higher speeds increase the risk of rim impacts, so a slight increase in pressure is advisable. In wet conditions, slower speeds and the need for greater traction mean reducing tyre pressure slightly can be beneficial, though always within the range you established during pre-event testing. The key is ensuring that your pressure is suitable for the day's riding.
If things don’t go to plan, don’t worry, Topeak will be stationed out on the course at this year’s event, equipped with pumps, gauges, and tools to help you make any necessary adjustments.
TUBELESS
One final consideration is whether to run tubeless—i.e., without inner tubes. The advantages are numerous: reduced weight, improved rolling resistance, and a lower risk of pinch flats. Tubeless also allows you to run lower pressures, giving you faster rolling and better grip.
Most tyres today are tubeless-ready, and with a good rim, you can achieve a reliable seal. However, it’s important to set up your system well in advance of the event, as it often takes a few rides to settle in. And remember, even with tubeless, you’ll still need inner tubes as spares!
HOOKLESS RIM TECHNOLOGY
Zipp’s hookless tubeless wheel technology is key to improving your speed. If you're new to the concept, this video explains everything: how the tire stays on the rim, maximum tire pressure, and how hookless reduces energy loss from road or trail vibrations. It also explains how hookless rim technology creates a seamless tire-to-rim transition, improving aerodynamics.
Want to learn more? Click
HELMET AND GLASSES
While wearing a helmet is a given these days, getting the right one is essential— especially for an event like the Dirty Reiver, where you'll be wearing it for hours. What better partner than POC, the innovative Swedish brand known for their commitment to safety and performance?
POC’s “seamless fit” system combines head and eye protection into one cohesive setup, meaning no more catching your glasses on your helmet. Their helmets are packed with features, come in a range of colours, and offer something for everyone—even the most discerning when it comes to colour coordination!
POC’s glasses feature Carl Zeiss lenses and an interchangeable system, allowing you to adjust visibility based on changing light conditions.
Born and based in Stockholm, Sweden, POC is a safety and performance pioneer on a global mission: protect lives and reduce the consequences of accidents for athletes and anyone inspired to be one. At the core of everything they believe and do lies data, research, and rigorous testing. Whether on the mountains, trails, or winding roads, a ride with POC is a ride protected by science.
SELLE SAN MARCO - Sitting Pretty
Choosing the right saddle for you can at times seem overwhelming. – You go to the store and see a wall of black saddles that kind of all look the same, but with Selle San Marco and their ID Match (IDM) system, we can help simplify that decision with the use of our ID Match Smart Calliper. It’s a simple 3-step process to help guide you to the right size and from there you can choose the saddle that best suits your type of riding, be that Gravel, road or off-road.
Selle San Marco has been making saddles since 1935, so really understand the process of finding the right perch for you. Our gravel collection consists of several models. The Regal Short, a modern classic that has all the hallmarks of its grandfather, the legendary Regal, but with a very modern X-Bow suspension rail system. Or the AllRoad Supercomfort, based on our best-selling Shortfit models, with the extra length required to provide stability when riding on gravel. Our newest saddle is the ultra-modern Mantra. A saddle that uses the latest technology and design to offer you all the features needed for any offroad adventure.
When it comes to choosing the right level of comfort for long days in the saddle, the Supercomfort range with the addition of 10% padding and light gel will give you all the support you need. As we say, the best saddle, is the one you do not notice.
https://sellesanmarco.com/saddles/gravel-bikepacking/
Selle San Marco will be on site and offering free ID Match Fitting supported by our retail partner at Team Cycles Kielder Forest.
We look forward to seeing you at the Castle!
LIGHTS
It’s time to light up Dirty Reiver! With this year’s later start time, many of you will be finishing under the Moon.
Lights have always been compulsory for the Dirty Reiver 130/200km routes, but with this year’s later start, they are more important than ever. Even if you think you'll finish in daylight, a wrong turn or a series of mechanicals could leave you in a very dark situation.
Thankfully, Moon is this year’s official light partner, offering a wide range from budget-friendly models perfect for city commutes to the 6000-lumen Canopus Pro for high-speed nighttime mountain biking. While most of the course is off-road, some short road sections mean a high-quality rear light is recommended. The Moon Sport Helix is ideal, being small, lightweight, and offering over 100 hours of burn time on a 3-hour charge—enough for multiple Dirty Reivers!
For the front, the compact but powerful Rigel Max fits the bill perfectly, delivering a maximum of 1500 lumens while weighing just 144g, giving you the light you need without unnecessary bulk. Moon will display their full range at the event, and for those who forget, a small selection will be available for purchase on the day.
GEARING
"Gravel" means different things to different people. For some, it’s adding bridleways, forest tracks, or fire roads to a road ride for variety. For others, it’s about longer rough trails that bring big smiles for miles. And let’s not forget those who love clattering downhill on rugged, technical trails—this might be easier, but less fun, on a mountain bike. Whatever your 'ultimate gravel experience,' it’s all great fun.
SRAM ensures you have the right products for every eventuality, especially when it comes to gearing. We’ve got you covered.
We created an overview of the three most common gearing setups. Our 1x SRAM Eagle drivetrain delivers for adventurous riding; the 1x SRAM XPLR drivetrain offers superb versatility for gravel and all-around rides; and the 2x SRAM drivetrain is ideal for road riding, and even a bit beyond. No matter how or where you ride, there’s a SRAM gearing option for you.
Gearing choices: Meet SRAM Red
ADVENTURE 1x EAGLE
We know that riders sometimes take gravel bikes beyond their original design, pushing them to the extremes. Whether you’re loading up with gear, tackling long, loose, rocky climbs, or racing across a continent, a drop bar bike with the maximum gear range is key.
Enter the adventure build (or “Mullet”): an Eagle AXS MTB rear derailleur and cassette paired with road AXS shift/brake levers and a road chainset. This setup offers a 10-50 or 10-52 cassette with a 38-50T chainring, giving you a massive gear range in both mechanical and wireless electronic options —ensuring you’re ready for even your most adventurous rides.
ALL-AROUND 1x XPLR
For a gravel bike where versatility matters, the XPLR drivetrain with wireless electronic or mechanical shifting and a 10-44 (10-46 on SRAM Red) or 11-44 cassette is the sweet spot. The 10-44/46 cassette tightens gear jumps, especially at the lower end, giving you the perfect ratio for hard pedalling. Meanwhile, the provides ultimate chain management with its built-in clutch and wide-narrow tooth profiles on the pulley wheels, keeping your chain secure no matter the trail chatter.
ALL-ROAD 2x
We’re fortunate to live in a time with so many bikes that are fast and fun on the pavement yet capable on technical gravel trails. A bike that handles a huge range of activities needs an equally versatile drivetrain, and a 2x eTap AXS build with a 46-33T or 43-30T chainring combo paired with a 10-36 or 10-33 cassette covers it all. With these gearing options, you can tackle the toughest road rides and still spin up steep dirt climbs
For more on how our 2x drivetrains compare to traditional gearing, watch our story on X-Range gearing. To find your perfect match, you can browse complete bikes with SRAM AXS in our bike finder.
BIKE GPX COMPUTERS
Though the course is fully marked, many people like to have the course GPX pre-loaded onto their head unit before the event day.
However, these indispensable devices give much more than turn-by-turn navigation; they also offer an essential source of information during the ride.
Data fields showing average speed, distance to the next feed, amount of climbing, etc., can all help a rider to pace themselves and know what lies ahead.
WAHOO ELEMNT ACE
ELEMNT ACE is Wahoo's largest and most powerful bike computer ever. With its touchscreen convenience, super-sized display, and ride intelligence that takes care of the details, it makes planning, navigating, and analysing your performance easier than ever.
16 million colour TFT touchscreen: Control at Your Fingertips
On ACE, you decide how you interact with your head unit based on the conditions and what works for you. Use the tactile buttons or swipe, pinch and zoom on the 3.8” touchscreen.
30+ hour battery life: Power to Perform
With up to 30 hours of battery life, ACE is designed to keep you connected and informed from start to finish. From the most powerful dual-band GPS tracking, to real-time data, you can enjoy your longest rides.
Smart Navigation: Explore with Confidence
Wahoo worked with leading providers including Strava, Ride With GPS, and Komoot to deliver the best navigational experience. Voice turn-by-turn keeps you focused on the ride and new detailed map layers help you visualise points-of-interest, different surface types, road names, elevation and much more.
Welcome Dashboard: Always ready to ride
With an all-new Ready-To-Ride dashboard, you can choose a workout profile, load routes or workouts quickly, flight-check your sensors and battery life – all in a glance.
Wahoo TRACKR Heart Rate Monitor
The new TRACKR Heart Rate Monitor pairs seamlessly with the ACE. Accurate, reliable, comfortable, connected and rechargeable, the TRACKR offers you everything you need from a heart rate sensor to take your performance to the next level.
RIDE THE REIVER WITH WAHOO
Wahoo will be at Kielder with a selection of demo ELEMNT bike computers which you can borrow free of charge!
The head units will have all three Dirty Reiver routes pre-loaded for you to follow along with whichever distance you're taking on. Wahoo!
Wahoo ELEMNT GPS bike computers: SIMPLY POWERFUL
Wahoo ELEMNT cycling computers offer powerful features to track your performance, navigate new routes and stay connected before, during and after your rides. Smart navigation features provide the freedom to explore with confidence.
TWO WEEKS TO GO
In the run-up to the event, aim to cut down on the big miles. Long days in the saddle are tiring and should be completed by two weeks to go. At this point, keep the mileage down, but stick with those higher intensity rides to keep the legs spinning over.
The final weekend could be a middistance leg loosener, with the final few days focused on recovery.
With training out of the way, take some time to prepare kit and do any final checks of the bike.
Make sure that tyres, rims and brake pads have plenty of wear in them and don’t forget to top up with some new sealant if running tubeless.
Check that there is nothing coming loose from previous rides: saddle, bars, bottle cages, etc.
It’s also a good time to check, clean and lube the drivetrain making sure the gears are running smoothly.
If you have had a bike service done make sure that you test the bike ahead of the event.
PLAN YOUR NEXT WINTER RIDE
Cycling doesn’t stop when the temperature drops. With Ride with GPS' powerful features, winter rides are easier to plan than ever. The 7- and 30day heat maps show you the most popular routes currently being ridden in your area, while our Unpaved cycling layer is perfect for training on gravel roads and trails when preparing for Dirty Reiver. Wherever the season takes you, Ride with GPS is here to support your rides through winter and beyond.
EVENT DAY NAVIGATION
When preparing for the Dirty Reiver, you can ride with confidence knowing that navigation on event day will be hassle-free. Every participant will have complimentary access to offline maps and voice navigation for the official routes. Even in areas like Kielder Forest with minimal cell service, the Ride with GPS app will keep you on course without a hitch.
While the routes are being finalised, get started by downloading the Ride with GPS mobile app and syncing your Wahoo or other favourite device.
Register for a one-on-one or group webinar with our team to help you get ready to ride.
LE COL’S GUIDE TO LAYERING
Long days on the gravel demand a kit that adapts as fast as the conditions change. The Le Col ARC collection is built for exactly that—lightweight, breathable, and ready for anything the ride throws at you.
Start with your foundation. The ARC Merino Base Layer regulates temperature and wicks sweat away, keeping your core warm even when damp. Over this, layer the ARC Long Sleeve Jersey for insulation that won’t overheat when you push the pace.
Packable protection is key. The ARC Lightweight Rain Jacket is your ultimate
defence against the elements—fully waterproof yet breathable enough for allday wear. A gilet adds an extra buffer against the wind without weighing you down.
Stay adaptable. Arm warmers, lightweight gloves, and a snood give you the flexibility to react to shifting conditions without overloading your pockets.
Smart layering means staying comfortable no matter what the ride brings—so you can focus on the adventure ahead.
TIPS FROM LE COL AMBASSADOR CHRIS HALL
"Back again, and it just keeps getting better!”
Dirty Reiver is one of the UK’s most exhilarating gravel events—a test of endurance, grit, and adventure on the remote and rugged trails of Kielder Forest. With over 200km of rolling gravel, punchy climbs, and fast descents, it’s a true epic. And after tackling it three times before, I know that what you wear can make or break your ride.
The Right Kit for the Reiver
April in Northumberland is unpredictable—frosty starts, potential rain, and long hours in the saddle. That’s where the new Le Col ARC collection comes in. It’s designed for the extremes of gravel riding, using merino fibres that keep you warm, even when wet. The ARC Long Sleeve Jersey paired with the Lightweight Rain Jacket is a game-changer for chilly starts, and I’ll be combining it with the ARC Cargo Bib Shorts—because extra pockets for midride snacks are a must.
Tyres & Gear You Can Trust
Dirty Reiver's gravel is sharp and unforgiving. Go as wide as your frame allows and make sure your tyres have solid puncture protection. A Dynaplug and a pump could be the difference between finishing strong and walking to the nearest checkpoint.
Fuel Up & Have Fun
Pacing is key. This isn’t a race to blow up in the first 50km—fuel early, drink consistently, and enjoy every stretch of the course. The landscapes are stunning, the atmosphere is electric, and there’s nothing quite like rolling into the finish after a day on these legendary trails.
See you out there! � �
FUELLING YOUR RIDE WITH CLIF
Here we go - Dirty Reiver 2025 is all systems go, and we at CLIF Bar are incredibly excited to be along for the ride!
CLIF Bar was born on a bike in 1990, when Gary set out on an epic ride similar to the one many of you will embark on the morning of Dirty Reiver. During this journey, Gary struggled to eat yet another unappetising, sticky, hard-to-digest bar. In that moment, which he now calls "the epiphany," the inspiration for CLIF Bar was born.
Gary took his idea to the best baker he knew—his mom—and for the next few months, the two experimented with ingredients and recipes, mixing, baking, and tossing out bars that didn’t make the cut.
Finally, Gary settled on the right recipe: a better-tasting bar made with nutritious, wholesome ingredients to sustain energy. He named his creation CLIF Bar in honour of his father, Clifford—the man who introduced him to wilderness adventures and encouraged him to follow his passions in life.
Thankfully, today there is a wide range of quality nutrition options, and our understanding of fuelling has grown significantly. Yet CLIF remains a tasty, nutritious energy bar to power you through your next challenge.
During Dirty Reiver, CLIF Bars and Bloks will be available at designated feed zones on the course. Be sure to stop in, enjoy a bar, and grab some Bloks to top up your energy levels. Like all great adventures, though, preparation is key, use the weeks leading up to the event to fine-tune your nutrition strategy. This way, when event day comes, you can set off knowing you’re ready to conquer whatever the day has in store!
For those who aren’t quite as prepared, fear not! Visit us in the arena on Friday, where we’ll have a wide range of products for you to stock up on.
From all of us at CLIF Bar, good luck and, most of all, enjoy the ride!
Our compulsory kit list is the minimum that we require ALL riders to carry to ensure their safety. The list is not onerous. All of the items are things that we would imagine you already carry with you on a long winter ride - so there should be no weight penalties!
The items of clothing are to keep you warm if you have to stop for a prolonged period of time, to fix a puncture or help someone else, so please do not skimp on these items.
We have put together some of our personal favourites along with the list. Everything can be fitted into a couple of jersey pockets and a small seat/ frame bag.
Make sure that any spares that you are carrying are in serviceable conditionstraight tyre levers, new spare tube of the correct size and a split link for the correct gearing - 10/11/12/13speed?
It is also worth packing a small amount of chain lube and consider the weather in advance - if it is going to be very cold or wet make sure you pack an extra layer!
COMPULSORY KIT LIST
• Front Light + Rear LED - 300 lumens for 2hrs (not required for the 65km distance) - with our later start time we will be checking riders have these! Some great compact and light offerings from Moon with very good burn times - perfect!
• Helmet - POC offer a good range and with glasses to match, protect your eyes from the gravel and the wind
• Emergency Whistle - a cheap plastic one will do
• Survival Blanket - cheap and light so no excuse!
• Waterproof Jacket - light , breathable and waterproof. Get one that does all three with Le Col’s Sport Rain or Pro Rain Jackets
• Warm Hat/Buff - plenty to choose from here
• Spare Base Layer - Merino or synthetic, take your pick
• Spare Inner Tubes - spares available at Feed Stations!
• Tyre Levers - lots to choose from
• Pump - we choose an alloy body for better pressures. Topeak will be on hand to help you choose - the Gravel 2Stage fits the bill
• Multitool - get the right sizes for your bike! Unior do some neat combo’s
• Mobile Phone - fully charged and in a protective case
• Food for duration of the event
• Ability to carry 1.5l of water: 2 bottles/hydration pack (Camelback Podium Bottle or Chase Vest)
• Basic First Aid to cover any grazes and help stop bleeding
BAGS AND CARRYING KIT
For an event like The Dirty Reiver there is no need to carry too much! However, striking the all-important balance between ‘what you need’ versus ‘the extra weight’ can be difficult.
The compulsory kit list covers most things we deem necessary and is the minimum requirement for the event. Those who are not aiming for a fast time could add a warm layer as back-up for feed stops and a later finish.
A combination of jersey pockets, a top tube bag and a small saddle bag should be sufficient. Keep food and any items you want to access quickly behind the stem. Keep clothing/spares in the jersey, and put any non-essentials (additional base layer, jacket and First Aid) in the saddle bag.
Alternatively, a Camelbak cycle-specific hydration vest enables you to combine everything in one place. With chest pockets for holding food/snacks and a convenient drinking tube - eating and drinking on the trail should be a cinch!
CamelBak will be on hand, at the event, keeping you hydrated and showcasing their new Podium Bike Bottle range: made from premium steel and ultra-lightweight titanium, the newest additions to the Podium series are built for speed.
ON THE DAY
BIKE SERVICING
UNIOR NEUTRAL SERVICE
Unior Bike Tools will be at the Expo demonstrating their extensive range of ‘Trail’ tools, as well as the comprehensive pro-tool packs.
Take your bike along to their mechanics for a pre-event fettle or check.
They will also be in attendance at Feed Stations around the course to keep you rolling if disaster strikes!
We will have some mobile Unior service at marshal points, as well as the Topeak Team ready to keep your tyres topped up.
FEED STATIONS
Before you stop, have a plan and stick to it. Know what foods work for you and try not to waste too much time - even if the sun is shining and the music is good!
• Feed 1 - 53km approx (for 130/200km)
• Feed 2 - this is at 47km on the 65km course and 103km for 130/200km riders
• Feed 3 - 154km for Dirty Reiver 200k riders only
FEED STATIONS SUPPLIES
We aim to stock the following at each feed station:
Feed 1: (53km for 130/200km riders) - warm drinks, water, CLIF nutrition, bananas, traybake, fig rolls, crisps, sweet nibbles.
Feed 2: (103km for 130/200km riders and 47km for 65km riders) - warm drinks, soup/rolls, tray bakes, savoury nibbles, fig rolls, CLIF nutrition, Redbull, water, crisps, sweet nibbles + Rider Drop Bags.
Feed 3: (154km for 200km riders) - water, CLIF nutrition, bananas, traybake, fig rolls, crisps, sweet nibbles, savoury nibbles.
All to be confirmed in the final rider communication.
DROP BAGS
For those riding the 130 and 200km distances there is the option to send a ‘drop bag’ ahead to Feed 2 at 103km.
This is the perfect opportunity to stock up on your favourite ride nutrition as we all have our own preferences when doing a long event. It is also a chance to have an extra treat or a warm pair of gloves or get a top up of your hydration drink.
CUT-OFF TIMES
Throughout the event (130/200km distances), there are a two cut-offs: all riders need to be aware of these. Knowing them in advance - and noting where they are - can save a lot of last minute sprints and disappointed riders!
The final Rider Brief and Rider Notice Board at the Event Centre will have the updated cut-off times based on any last minute course adjustments.
THE MAIN CUT-OFF TIMES FOR 2025 ARE:
• 33km - Chirdon Burn 11:40 (2.5hrs) for 130/200km riders
• 136km - Kielder Forest Drive 17:30 (8.5hrs) for 200km riders
• 178km - Kielder Dam 21:15 (12:15hrs) - optional cut-off if riders unlikely to make the course closure
Course close at 22:30hrs
RIDING
STRATEGY
Riding an endurance event like the Dirty Reiver will have its ups and downs, so having strategies to look after yourself and stay focused is key.
If it's your first time, resist the urge to keep up with faster riders at the start—you'll pay for it later! Think of your energy as a battery: if you burn it too quickly, it won’t last.
The key to finishing successfully, regardless of fitness, is pacing yourself evenly throughout the ride. If you’ve got energy left, you can up the pace on the final leg and catch other riders.
Monitoring your average speed can help, but remember that it will drop on long climbs and pick up on descents. Check it every 10-15 km for a more accurate picture, but don’t obsess over it.
Feed stations are usually buzzing with other riders and it is tempting to stay that little bit longer, especially if it is warm. Enjoy them, but have a plan and stick to a time limit—your average speed drops quickly while you’re there.
Riding with others helps pass the time. Chatting with someone new and sharing experiences makes the miles fly by.
Finally, break the route into short sections or smaller goals. Many riders aim for the next feed station or a distant landmark. Breaking the ride down into manageable chunks is good for the mind and the morale.
With a positive mindset, those rough patches will feel easier, and the aches will fade as the miles fly by.
FINAL PREPARATIONS
In the lead up to the event, try and reduce unnecessary stress. Check the weather forecast and have your riding kit put to one side. Make sure bottles and food are topped up.
Allow plenty of travel time (especially if you need to register), and ensure you have your base layers on already - no one wants a full undress on a cold morning! Travel in warm clothes and keep them on until you are ready to roll.
Two ‘pre-ride’ bags are useful for keeping everything to hand. In one of these place your riding kit. In the other put together your kit for on the bike and in your pockets: bottles, GPS/Mobile (charged), bag with tools, spare clothes, food, etc.
Have a plan for when you arrive and stick to it. Try and avoid social distractions. You can catch up with people if you have time once you are ready.
Event Day Pre-start Checklist:
• Unload bike - check wheels, brakes, gears
• Bottles, bags, lights and GPS unit attached
• Cycle jacket/jersey on and load pockets.
• Put warm clothing back on if you have time
• Make sure your drop bag has been handed in
• Shoes, helmet, gloves and glasses on
• Ready to go!
A WORD FROM OUR HOSTS AT FORESTRY ENGLAND
We caught up with Alex MacLennan, Recreation and Public Affairs Manager for Forestry England. Alex, who’s been based in the North East for the past 20 years, has overseen the development of mountain bike trails at Kielder and, before that, managed the Borders forests like Glentress in the early 2000s.
“It’s fantastic to see the Dirty Reiver returning to Kielder once again. It’s a key signature event for the region and coincides with the arrival of spring in rural Northumberland.
Building on the success of the Dirty Reiver, I’m excited to share that we’re about to announce the UK’s largest network of way-marked gravel trails, some of which form part of the Dirty Reiver route. These trails will cater to everyone, not just gravel riders, but also walkers and horse riders. This is a game-changer for Kielder Forest, connecting local communities across the Tyne, North Tyne, Liddlesdale, and Redesdale valleys, with the added bonus of crossing the Scotland-England border.
We hope these new trails inspire gravel riders to explore not just the forest, but the wider Northumberland area, which has so much to offer.
Everyone at Kielder Water & Forest Park wishes all the riders and supporters of the Dirty Reiver a fantastic time and we look forward to seeing you out in the forest.”
For more trail information - www.visitnorthumberland.com
THANKS TO ALL OUR SPONSORS
& THANK YOU TO OUR PARTICIPANTSSEE YOU THERE!
