Ouray 100 Mile Endurance Run

The John Cappis is a challenging 50K mountaineering event held near Silverton, Colorado, featuring approximately 19,000 feet of elevation gain across rugged terrain. Participants summit several peaks around Silverton on an unmarked, mostly off-trail course with elevations ranging from 9,300 to 13,30..

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 eleva..

The Silverton Alpine Marathons, held in Silverton, Colorado, offer runners a challenging and scenic trail experience in the San Juan Mountains. Participants can choose from three distances: an 8-mile out-and-back, a marathon (~26.7 miles), and a 50K (~31.8 miles). The marathon and 50K courses follow..

The Kendall Mountain Run is an annual mountain running event held in Silverton, Colorado, featuring two main distances: a challenging 12-mile race and an 11K. Starting at 9,318 feet in downtown Silverton, runners ascend jeep roads to a thrilling final scramble near the 13,066-foot summit of Kendall..

The Box Canyon Trail Races in Telluride, Colorado, offer two challenging and scenic mountain runs: a 30K and a 10-mile race. The 30K is a tough loop featuring about 5,800 feet of elevation gain, passing landmarks like Bridal Veil Falls and the Smuggler-Union Hydroelectric Plant, reaching a high poin..

The High Five 100 is an extreme ultra-endurance running challenge held in Lake City, Colorado. Covering an estimated 90 to 105 miles with over 40,000 feet of elevation gain, the course requires runners to summit five 14,000-foot peaks and six 13,000-foot peaks in the rugged San Juan Mountains. Parti..