Trail Running calendar near Denver 2024-2025

We have found 65 Trailruns within 80 miles of Denver. See below where and when you can find the races.

The Wicked Root 50K is a celebrated running event in Lowell, NC, marking its 10th year. Scheduled for June 14-15, 2025, the event features a challenging 50K race on both days, along with a 10-mile option. Participants can expect a well-supported course with fully stocked aid stations offering a vari..

The Buck Creek Streak 5K Trail Run is an annual clothing-optional event held at the Carolina Foothills Resort. Participants can choose between a 5K or a 7.3K run/walk through scenic woods, trails, and meadows. The event honors Mike Ward, a longtime resort member, with the "Mike Ward Challenge" for t..

July 2025

The Sweaty Backyard Cox Ultra is an exciting running event held in the woods of Concord, NC, on the last Saturday of July. This unique Backyard Ultra features a loop course of exactly 4.167 miles, with participants completing as many loops as possible within an hour. Runners must adhere to specific ..

August 2025

Hobby Trails to You! is an exciting trail running event scheduled for August 9, 2025, featuring both 5K and 10K races. Participants will enjoy a challenging course that begins with a cross-country start and transitions into single-track trails. The event takes place at Hobby Park in Winston-Salem, N..

The Dark Horse Trail Race Series offers a unique trail running experience at the Tryon International Equestrian Center in North Carolina. Participants can choose from a full marathon, half marathon, or 10k race, all set against the backdrop of rolling hills and lush forests. After the race, runners ..