Ouray 100 Mile Endurance Run

The Sky Pilots Ouray Backyard Ultra is a unique running event held in Ouray, Colorado, featuring a "last person standing" format. Participants complete a 4.167-mile course, and if they finish within an hour, they continue to run each hour until only one runner remains. The course is relatively easy,..

The San Juan Solstice 50 Mile Run is a challenging ultramarathon set in the stunning San Juan Mountains of Colorado. This annual event, taking place in June, attracts runners from various backgrounds, offering a unique opportunity to experience the breathtaking scenery and rugged terrain. Participan..

The Hardrock 100 is a challenging 100-mile ultramarathon held in the San Juan Mountain Range of Southern Colorado. Participants face a total elevation change of 66,394 feet, with an average elevation of over 11,000 feet, making it one of the most demanding endurance runs in the world. The course fea..

The Silverton Alpine Marathons, held in Silverton, Colorado, offers participants a chance to experience the stunning San Juan Mountains through various race options, including a marathon, 50K, and an 8-mile run. Runners traverse the historic mining ghost towns and reach elevations of up to 12,930 fe..

The Kendall Mountain Run, presented by adidas Terrex, is an exhilarating running event held in Silverton, Colorado. Participants can choose between a 12-mile or 11K course that begins in downtown Silverton and features a challenging ascent to the summit of Kendall Mountain, which stands at 13,066 fe..

The High Five 100 is a challenging ultra-running event held in Lake City, Colorado, designed for elite runners seeking an extraordinary test of endurance. Participants must navigate a course that includes 22 designated locations, comprising 6 checkpoints and 16 proof points, with the freedom to choo..