Trail Running Calendar Colorado 2026-2027

Trail races around the rim of the Royal Gorge in Cañon City with distances from 5K to 50K. Courses feature rocky, technical terrain, aid stations every 2 to 6 miles, on-site EMTs, chip timing, and finisher medals.

Falcon 50 at the USAF Academy in Colorado Springs offers trail and road races including a 50 mile ultra. The event is open to DoD ID cardholders and online registration closes April 18.

A community 5K poker ride and run at Bear Creek Regional Park welcoming horses, pack burros, cyclists, runners, hikers, kids, and leashed dogs. Proceeds support the Equestrian Skills Course and prizes are awarded across multiple categories.

Trail races at Greenland Open Space in Larkspur, Colorado offer 4 mile, 8 mile, 25K and 50K distances on dirt double-track trails with aid stations and championship designation for the 50K.

Niwot's Challenge is an invitation-only navigational ultrarunning trial near Sedalia, Colorado. Entrants must use map and compass, carry mandatory gear, and complete long off trail loops with minimal aid.

A set of road and trail races in Garden of the Gods Park on May 2, 2026, offering 5K, 5-mile road and trail options and a 9.5-mile Double Take, with closed-traffic park roads, scenic rock formations, and on-course aid stations.

Collegiate Peaks Trail Run in Buena Vista, Colorado offers 25-mile and 50-mile loop options on single-track and jeep trails. Each loop starts near 8,000 feet and includes over 3,500 feet of elevation gain and loss.

Experience the 45th annual run along the scenic High Line Canal in Centennial. Enjoy chip timed 5K or 10K races followed by a pancake breakfast and beer garden.

A 150 hour timed ultra near Mack, Colorado with five zero pavement routes per Journey and separate crewed and uncrewed divisions. Runners must complete at least four Journeys to place.

Join the Aurora community for an untimed 1k fun run or a timed 5k race ending with an optional muddy obstacle course. This rain or shine event welcomes runners and walkers of all ages.

A women focused trail event at Cheyenne Mountain State Park offering distances from 4 miles to 50K across meadows, singletrack, and rocky ridgelines, with cupless aid stations and significant elevation change.

Experience a weekend of desert backcountry racing in Fruita with trail running, mountain biking, and gravel events. Join the community at 18 Road for competitive races, skills clinics, and outdoor festivities.

Trail races near Fort Collins in Lory State Park and Horsetooth Mountain Park offering 25 miles (about 5,500 ft gain) and 50 miles (about 11,000 ft gain) on mostly singletrack with staffed aid stations and a well marked course.

A community trail event in Kittredge, Colorado featuring a 7.4 mile route through local trails and a kids run based on one 0.15 mile lap per year of age. The race is manually timed and includes post race food and activities.

A 13.8 mile loop trail race near Fruita, Colorado, with about 1,000 feet of climbing on flowy singletrack and three aid stations. It is part of the Adventure Fest weekend and includes finisher mementos and age group awards.

Experience the natural beauty of Mueller State Park with various trail distances from a 10k to 12 hour timed ultra events. Choose between traditional distance loops or a unique randomized format determined by colorful draws.

Multiple trail distances run from Buffalo Lodge in Colorado Springs with courses around Rampart Reservoir and Rampart Range Road, high points near 9,500 feet, limited onsite parking and a shuttle for the point to point 60K.

Run the Sky Pilots Ouray Backyard Ultra in Fellin Park, completing a 4.167 mile loop each hour until one runner outlasts the field. Enjoy riverside trails, mountain views near 7,700 feet and shared aid.

A roughly 14 mile loop around Vallecito Reservoir in Bayfield, Colorado, combining paved road, dirt road and singletrack with about 1,000 ft of climbing. The event features four aid stations, a cupless policy and a post-race meal with live..

Trail races in Eagle, Colorado on May 16, 2026 offering a **14K** and **6K** on mostly single-track with notable elevation gain, finish-line food, aid stations with Skratch hydration, and awards plus an afterparty at Capitol Public House.