About MCMO

About Marine Corps Marathon Organization

Marine Corps Historic Half Weekend, comprised of the Healthy Lifestyle Expo, Historic Half, Semper 5ive and Devil Dog Double, is hosted by the Marine Corps Marathon Organization (MCMO). The MCMO is internationally known for conducting the Marine Corps Marathon (MCM), held annually each October in Arlington, VA and the nation’s capital.

The MCM is one of the largest marathons in the US and the world and stands as the largest marathon in the world that doesn’t offer prize money, earning its nickname, “The People’s Marathon.” The MCM has been voted “Best Marathon in the Mid Atlantic,” “Best Marathon for Charities” and “Best Spectator Event.” The MCM offers an experience for runners to tour the nation’s most recognizable landmarks while being supported by the men and women of the United States Marine Corps.