Holy Cow Trail Stampede

The Mountain Peacock 50k is an exciting ultra running event taking place in Golden, Colorado, where participants will conquer four peaks in one day. This inaugural event emphasizes a no-frills approach, focusing on the essence of trail running without expensive fees or elaborate aid stations. Runner..

The Mountain Ridge Trail Race, celebrating its 11th year, offers a variety of distances including a 5K, 10K, Half Marathon, and 21-Mile race, all set in the scenic Highlands Ranch, Colorado. Participants will enjoy 100% dirt and single-track trails with manageable elevation gains, showcasing the stu..

Niwot's Challenge is a challenging ultramarathon held annually in Colorado's Front Range, designed for experienced runners. Modeled after the Barkley Marathons, this grassroots event features a secretive course that requires participants to navigate using a map and compass, with limited aid availabl..

The Ol' College Try 24 Hour Ultra is Denver's inaugural 24-hour ultra race, taking place at Auraria Campus on May 24-25, 2025. Organized by Rise Again Running Events in collaboration with Tall Tales Ranch, this event invites runners of all levels to challenge themselves in a non-stop race environmen..

The Barr Lake Trail Race, held in Brighton, Colorado, is a celebrated running event now in its sixth year, featuring a variety of distances including 50K, 30K, Half Marathon, 15K, and 5K. Known for its flat and fast course with minimal elevation gain, the race offers stunning views of Barr Lake and ..

Chase the Moon is an exciting overnight running event held in the Highlands Ranch Backcountry trail system, featuring a 12-hour solo ultramarathon and team relays. Participants can choose to run solo or form teams of 3 or 5. New this year, shorter distances such as 5 miles, 10 miles, 25K, and 50K ar..