Trail Running calendar near Grand Mesa 2026-2027

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.

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.

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.

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.

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.

Challengers tackle a 6 mile climb gaining 2000 feet of elevation to reach the South Rim of the Black Canyon. Choose between a timed run or a scenic walk ending with a mountain breakfast and park views.

Experience the beauty of the Roaring Fork Valley with a point-to-point trail race from Carbondale to Basalt. Choose between 10-mile and 28k distances featuring iconic single track trails and a festive finish at Rock Bottom Ranch.

A Memorial Day trail event in New Castle, Colorado, honoring a fallen hero with riverfront routes. Options include 3.5 km and 7.7 km courses with both in person and virtual entries.

A mountain trail event in Snowmass Village on June 5-6, 2026 offering a 6.6 mile Red Loop and timed 6 hour and 24 hour ultras, with campground hub, on-site amenities, and 2026 as the final year at Snowmass.

A team trail relay in Snowmass Village on June 5-6, 2026 featuring mountain loops, camping at Ragnar Village, and team formats for four or eight runners. The course totals 120 miles with significant elevation gain and weekend on site amenit..

San Juan Solstice 50 Mile Run on June 20, 2026 requires live MAProgress tracking; entries were allocated by lottery with 300 registered and 285 on the waitlist.

A three-race trail series at Sunlight Mountain Resort in Glenwood Springs from June to September 2026, featuring 5k, 10k and a half marathon. Each event has specific bib pickup, registration rules, and course support details.

An annual uphill foot race from the Telluride gondola base to San Sophia ridge that raises funds for the Good Neighbor Fund. The 0.8 mile course gains 1,810 feet and includes age and gender categories with awards and a podium breakfast.

Trail running and mountain biking near Crested Butte with 15 km and 25 km options. Courses include alpine climbs to near 11,000 ft, limited aid stations, and non traditional prize drawings.

A 100 mile mountain ultramarathon in Ouray, Colorado, featuring about 41,862 feet of elevation gain and 14 climbs. Entrants must complete volunteer service or pay a $100 opt out; top finishers face drug testing for cash prizes.

Trail races of 5K and 15K on July 18, 2026 at Powderhorn Mountain Resort featuring climbs on the Stagecoach Trail and a finish at the Flattop Flyer. Registration includes resort entry, shirt, finisher item, post race food and a lift pass.

Experience the mountain trails of Aspen Snowmass with three distinct race distances. Runners can choose between a 50K trek across four mountains a 25K trail run or a 10K course starting from the Elk Camp Gondola.

Grand Mesa Ultras on July 25, 2026 offers 50 mile, 55K and 30K trail races on high elevation mountain terrain with camping options, finisher awards, cash prizes, a raffle, food and beer.

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.

A mountain trail event in Aspen on August 1, 2026 offering 50K, marathon and heavy half-marathon mostly on dirt trails with significant elevation gain; limited on-course support and a finish festival at Rio Grande Park.