The Marine Corps Marathon (MCM) is an annual marathon held in Arlington County, Virginia, and Washington, D.C. Its mission is to promote physical fitness, generate community goodwill, and showcase the organizational skills of the United States Marine Corps.

Established in 1976, the MCM is the fourth-largest marathon in the United States and the ninth-largest worldwide. The event attracts a diverse field of 30,000 runners from all 50 states, the District of Columbia, and more than 50 countries. It is known as “The People’s Marathon” and is open to participants aged 14 and above. Notably, the MCM is the largest marathon that does not offer prize money.