Hardrock 100
Silverton, United States • 11 Jul 2025
The Hardrock 100 is a challenging 100-mile ultramarathon held annually in the San Juan Mountain Range of southwestern Colorado. The race features a counter-clockwise loop course with a total elevation change of approximately 66,394 feet, including 33,197 feet of ascent and descent. The average elevation is around 11,186 feet, with the highest point reaching 14,048 feet at Handies Peak. The route passes through historic mining towns such as Silverton, Lake City, Ouray, Telluride, and Ophir, traversing rugged 4WD roads, dirt trails, and cross-country terrain. Known for its high altitude and demanding climbs, the Hardrock 100 offers a unique and scenic endurance running experience. Visit the organization's website for the most recent information.