The National Capital 20 Miler is the DC area’s premier fall marathon tune-up race. Runners will have access to a flat and fast out-and-back course on the C&O Towpath with multiple water stations along the way. Runners also have the option to register for the Janet Braunstein 5 Miler, which also takes place on the Towpath.
Both events start on the Towpath by the North Parking Lot at Carderock Recreation Area.
Please note that this year’s events take place on Saturday, October 3, instead of on Sunday.
Early Bird registration fees run through July 31, 2026, and DC Road Runners members receive discounted rates.