Marine Commandant Gen. James F. Amos congratulates a finisher of in the Ride 2 Recovery 9/11 Challenge Sept. 18 at the Pentagon in Arlington, Va. The Ride 2 Recovery 9/11 Challenge is an eight-day, 530-mile bike ride in honor of the 10th Anniversary of the 9/11 attacks. The bike ride starts near Ground Zero and will go through Shanksville, Pa., and end at the Pentagon in Washington D.C. Ride 2 Recovery's mission is to raise awareness and money to make a difference in injured veterans' lives.