HRCA Backcountry Wilderness Half Marathon

Rock Hawk Trail Races, held at Philip S. Miller Park in Castle Rock, Colorado, offer four distances: 50K, 25K, 10K, and 5K. Runners traverse the rolling Miller Park and Ridgeline trails, described as gorgeous and thrilling but not overly technical, with sweeping views.The course provides a solid cha..

The HRCA Wildcat Mountain Trail Races, held in Littleton, Colorado, offer a scenic and challenging trail running experience through the HRCA Backcountry Wilderness Area. Participants can choose from a 10-mile or 10-kilometer course, both featuring 100% dirt trails with varied terrain and stunning mo..

RexRun for PAWSitivity is a pet-friendly trail event in Aurora, Colorado at the Arapahoe County Fairgrounds. It offers a 5K Trail Run, a Family 5K Trail Walk (dogs welcome) and a Kids 1-mile Run/Walk. The day features a pet-centric atmosphere with therapy and patrol K-9 demonstrations, a dog costume..

The Greenland Open Space Pack Burro Race, presented by Double Rainbow Ranch, is the 4th annual event held in Larkspur, Colorado on the Greenland Open Space Trail. It offers two distances: 8 miles and 3 miles, raced by teams of one runner and one burro. The atmosphere blends friendly competition with..

Demon Dash is a 5K running or walking event held in Arvada, Colorado, featuring a new dirt course at the NAAC for a fresh home and surface. It’s pitched as a fun, community-focused experience suitable for runners and walkers of all ages. This year, the race runs in conjunction with the Demons Invite..

24 Hours of Palmer Lake is a 24-hour ultramarathon held in Palmer Lake, Colorado, on a 0.82-mile loop atop the Palmer Divide at about 7,240 feet elevation. The event is described as a low-fanfare, community-driven affair, welcoming runners who want to push mental and physical limits in a mountain se..