Trail Running calendar near Castle Rock 2026-2027

A four-race trail series in city and county parks with increasing distances and varied terrain. The races are chip timed and overall awards require completion of all four events.

Experience 13.1 miles of singletrack trails and hills in the Highlands Ranch Backcountry Wilderness Area. Enjoy custom medals and a post race pancake breakfast while competing for cash prizes in various categories.

Timed 6-, 12- and 24-hour running and relay events on a certified 1.0002 mile dirt loop at Colorado Youth Outdoors Swift Ponds in Fort Collins, with full-service aid every lap and locker-style lodge support nearby.

Trail races at Starsmore Visitor & Nature Center on November 8, 2026, with chip-timed 4-mile and untimed 2.5-mile courses on Columbine Trail; proceeds support Friends of Cheyenne Cañon and leashed pets are allowed on the trail.

A trail running event in Louisville, CO on November 14 offering a half marathon, 10K and 5K on out-and-back dirt courses with several aid stations, designated drop bag area, limited onsite parking and family-friendly post-race festivities.

A four-race trail series in city and county parks with increasing distances and varied terrain. The races are chip timed and overall awards require completion of all four events.

A winter trail event in Colorado Springs offering 50k, half marathon, and 10k courses that start at Bear Creek Regional Park. Trails include historic High Drive and Gold Camp Road with stocked aid stations and crew accessible points.

A four-race trail series in city and county parks with increasing distances and varied terrain. The races are chip timed and overall awards require completion of all four events.

The Sawmill Trail Runs will take place in Conifer on Saturday 5 December 2026. You can run 50 kilometers.

Experience winter trail running at Cheyenne Mountain State Park with views of Pike's Peak. Choose from traditional race distances or unique timed events ranging from 6 to 15 hours across four scenic loops.

Rattler Trail Race in Palmer Park, Colorado Springs on April 17, 2027 offers 5K, 10K, 25K and a 50K two loop course on singletrack with sandstone bluffs, technical sections and views of the city and Pikes Peak.

Trail races in Larkspur, Colorado offering four on site distances from 4 miles to a 50K ultra plus virtual options. Chip timing, technical shirts, and food and beer at the finish accompany soft dirt courses with Pikes Peak as a backdrop.

A road and trail running event in Garden of the Gods Park on May 1, 2027 offering 5K, 5 mile, and a 9.5 mile option with closed roads, multiple aid stations, and views of the park's iconic rock formations.

A women focused trail running event at Cheyenne Mountain State Park on May 8, 2027 offering distances from 4 mile to 50K across limestone, singletrack and ridgelines, with cupless aid stations and race packet pickup the day before.

Trail races at Mueller State Park from 10k to marathon plus two 12 hour timed events that use colored ball draws to set loop sequences. All courses are single and double track with no pavement and feature an aid station.

Weekend of obstacle races at Fort Carson with Sprint, Super, Beast and Ultra distances, plus kids races and spectator access. The courses use high elevation terrain with steep climbs and rugged trails.

A trail running event in Buena Vista on May 30, 2027, offering marathon, half marathon, and 9k distances and supporting local nonprofits during CKS Paddlefest.

Trail races at Granby Ranch Resort in Colorado on June 12, 2027, across multiple distances including a 14-hour Elevation Challenge scored by total elevation climbed. The event uses mountain single-track, aid stations, drop bags, and has a 2..

A trail event near Parker Colorado featuring a 10k with a stepped incline, a kids one mile on the same start, age and gender based staggered starts, aid stations on the loop, and volunteer entry options.