Colorado Mountain Half+ Series

The Race in the Clouds - Alma Dirt Festival is a multi-sport outdoor event held in Alma, Colorado in 2026. The festival base is Alma Cemetery Meadow, at about 10,600 ft elevation and roughly half a mile from downtown Alma. The event program includes mountain biking, trail running, an off-road duath..

The Silverheels Trail Runs take place July 10-11, 2026, with start/finish operations based at the Como Roundhouse in Como, CO. Distances offered include: 100-Mile 100k 50-Mile 60k 19-Mile 10-Mile Runner capacity is limited: 100 combined for the 100-Mile and 100k, and 200 combined for the 50-Mile,..

The Summit 200 is a single, non-repetitive 200‑mile loop around Summit County, Colorado, centered near Frisco. The mostly non-urban route uses single-track trails, forest roads, and some rec paths and pavement, with the lowest altitude above 9,000 ft and sections climbing toward 12,800 ft, plus 12 f..

The Sheep Mountain Trail Runs is the 12th annual event held in Fairplay, Colorado, with the Start/Finish at the Town of Fairplay Beach. The race has a runner capacity of 300 and a time limit of 16 hours. The course sits at an average elevation over 10,600 ft and takes place on the western slope of..

Run the Rockies Trail Race in Frisco, Colorado offers 5k, 10k, and half marathon distances on the scenic Frisco Peninsula trails, with views of Dillon Reservoir and the Ten Mile Range. The start and finish are at the Frisco Nordic Center. The course blends single-track and dirt roads, looping counte..