Hardrock Hundred Endurance Run

The Hardrock Hundred Endurance Run is a challenging 100-mile mountain race held annually in Colorado's San Juan Mountains. It features rugged terrain, high elevations, steep climbs, and descents across rugged trails and historic mining areas. Participants typically take 30-48 hours to complete, requiring exceptional endurance, mental resilience, and navigation skills. The race's tough conditions and variable weather make it a renowned test of outdoor endurance and adventure, attracting experienced ultrarunners from around the world.