The Air Force Marathon, presented by Northrop Grumman, USAA and Boeing, will be held Sept. 15 at the National Museum of the United States Air Force. Participants start and finish at the National Air Force Museum, and spectators are welcome at the museum or in downtown Fairborn. Other events include a half marathon and 10K to be held on the 15th. The Air Force 5K hosted by Wright State University will be run on Sept. 14 at the Wright State University Nutter Center. The Sports and Fitness Expo will also be held at the Nutter Center on Sept. 13-14.