Trail Running Calendar Colorado 2026-2027

High-altitude trail ultras in State Forest State Park offering 100 km and 60 km options across alpine ridges, varied technical terrain and staffed aid stations, with limited entries and significant elevation gain.

Experience the mountain trails of Colorado Springs at the Pikes Peak Ultra. Choose from four race distances that take you through high elevation terrain including Cheyenne Canon and the summit of Mt. Rosa.

Creede 50 and 100 take place in Creede on July 25 and 26, 2026, offering 50 mile and 100 mile courses organized by Tempest Adventures. The event site provides runner information, course details, crew and pacer guidance, and support resource..

A mountain trail event on Colorado’s Grand Mesa on July 25, 2026 offering 50 mile, 55K and 30K courses with technical single track, alpine scenery and multiple camping options.

High altitude mountain trail races in Telluride on July 25th 2026, featuring a 30K with about 5,800 ft of gain and a 10 mile with about 3,500 ft, mainly on technical alpine singletrack and double track.

Elevation Run/Walk in Conifer, Colorado on July 25, 2026 offers 10K, 5K and 2 mile courses on paved roads and trails around Aspen Park at about 8200 feet, with proceeds supporting local schools and trail maintenance.

National High School Trail Championships and Beas Knees Citizens Race The National High School Trail Championships and the Beas Knees Citizens Race take place on July 25, 2026, on the Salida Mountain Trails in Salida, Colorado. The high sch..

Experience a historic Colorado tradition where runners and burros compete together. Navigate mountain trails and high altitude passes while carrying traditional mining gear in this unique world championship event.

A single 200-mile loop around Summit County, Colorado on trails, 4WD roads and rec paths, with elevations above 9,000 ft and sections over 12,700 ft. The field is capped at 75 runners and includes 12 aid stations, four sleep stations, and l..

STRS #4 - Tom's Baby on July 29, 2026 takes place at Tom's Baby Trailhead in Breckenridge, CO, offering short and long course entries with adult, youth, and non-binary categories and published entry fees.

A point to point relay across Colorado, the Wild West Relay covers 200 miles and 36 legs from Fort Collins to Steamboat Springs over two mountain passes. Teams of various sizes can compete and each team carries a GPS tracker with app suppor..

Experience high elevation trail running in the mountains of Fairplay Colorado. This event offers three distances ranging from a half marathon on forest roads to technical ultramarathons through remote wilderness terrain.

A 15 mile mountain trail run on August 1, 2026 that climbs about 3,100 feet and reaches over 12,000 feet at Kennebec Pass. The course offers alpine terrain and views of the Animas and Dolores River valleys while supporting La Plata County S..

Trail races in Aspen on August 1, 2026 offering 50K, marathon and heavy half marathon on dirt trails with substantial elevation gain. The event finishes at Rio Grande Park the same day as the Duck Derby festival with music and food.

Point to point mountain trail races in Winter Park, Colorado on August 1, 2026. Three distances offer alpine singletrack, substantial elevation change, aid stations with nutrition, and age group awards for men and women.

A mountain trail race in Vail on August 1, 2026 featuring an uphill 6.9 km course with about 2,013 feet of gain, singletrack and doubletrack terrain, an aid station, post race refreshments, awards and a raffle.

Two Brothers Up and Down in Idaho Springs offers two uphill out and back races on mixed dirt and paved roads, with steep sections and an aid station on the 10k. Both races start and finish at Courtney Riley Cooper Park.

A pack burro race in Buena Vista Colorado on Aug 2 2026 with 13.1 mile and 7.3 mile courses offered both with and without burros. Burro teams must meet specific equipment and conduct rules and finishers receive a gift and a meal.

A four-race August trail series at Lory State Park in Fort Collins featuring 5k, 10k and 12k courses with chip timing, series points and end-of-series awards. Post-race pizza and beverages are provided.

A self navigated 100 mile mountain challenge from Lake City that requires visiting 24 points in order, returning within 48 hours, and covering roughly 90 to 105 miles with over 40,000 feet of elevation gain.