The North Face Endurance Challenge returns to Algonkian Regional Park, Great Falls Park and the Potomac Heritage Trail again. The course keeps runners on their toes with ever-changing terrain. Overall, the course consists of 50% single-track, 30% dirt or gravel double-track, 10% gravel carriage road and 10% paved road.
Saturday Races include: 50 Mile, 50k, Marathon, and Marathon Relay
Sunday Races include: Half Marathon, 10k, and 5k
Learn more: https://www.thenorthface.com/get-outdoors/endurance-challenge.html