North Face Endurance Challenge
The North Face Endurance Challenge is a series of trail running events that happen in locations across North America. The Washington D.C. event returns to Algonkian Regional Park, Great Falls Park, and the Potomac Heritage Trail. The course keeps runners on their toes with the ever-changing terrain. The course consists of mainly single and double track with a few spots of carriage road in the mix.
The first day consists of the 50-mile, 50k, marathon, marathon relay, and a kid's fun run. While the second day hosts the half-marathon, 10k, 5k, and a kid's fun run.