Marines fill hundreds of cups with water before the start of the Marine Corps Marathon in Washington, D.C., on Oct. 27, 2013. The Marines at Water Point 6, mark the halfway point of the 26.2-mile race. - Marines fill hundreds of cups with water before the start of the Marine Corps Marathon in Washington, D.C., on Oct. 27, 2013. The Marines at Water Point 6, mark the halfway point of the 26.2-mile race.