Byers Peak Stampede Half Marathon

The Summits Trail Runs, part of the Human Potential Running Series, is an exciting trail running event set in the stunning Rocky Mountains at Granby Ranch Resort, Colorado. Scheduled for June 14, 2025, the event features multiple race distances, including a challenging 43-mile Quad, a 27-mile Triple..

The Summit 200 is an extraordinary 200-mile mountain race set in Summit County, Colorado, featuring a challenging loop that showcases stunning hiking trails, forest roads, and breathtaking views. Runners will experience significant elevation changes, with the lowest point over 9,000 feet and section..

The Boulder Rez Marathon is a scenic running event held at the Boulder Reservoir in Colorado, featuring a flat course primarily on dirt roads and trails. Participants can choose from various distances, including a marathon, half marathon, 3/4 marathon, and 10K. The race offers stunning views of the..

The Run The Rockies Trail Race offers a scenic running experience through the Frisco Peninsula trails, featuring breathtaking views of Dillon Reservoir and the Ten Mile Range. Participants can choose from a 5k, 10k, or half marathon, making it suitable for both beginners and seasoned runners. The ev..

Dirt Circus - Boulder is a vibrant community running event set to take place in Boulder, Colorado. Organized by UltraSignup, this festival celebrates local races, running clubs, and businesses, fostering camaraderie among trail running enthusiasts. Participants can enjoy a social run with options fo..

Devil on the Divide is a challenging trail running event held in Empire, Colorado, featuring two race distances: a 50K and a 22K. Participants will experience breathtaking views of Clear Creek County and the Continental Divide, with the 50K course reaching altitudes over 13,000 feet and involving ov..