Trail Running calendar near Grand Mesa 2026-2027

The Ouray 50 mile run in Ouray, Colorado is a high elevation mountain course with 23,582 feet of climb, mandatory volunteer service or a $100 opt out, live SPOT tracking, and drug tested cash prizes for top finishers.

A point to point ultramarathon from Crested Butte to Aspen covering about 40 miles and over 6,000 feet of climb, held as a fundraiser for Crested Butte Nordic with mandatory safety gear and on course aid stations.

The The Sneffels Round will take place in Ouray on Saturday 5 September 2026.

A demanding 17.1 mile mountain trail race connecting Ouray and Telluride over the high altitude Imogene Pass. This event features steep rocky terrain and strict cutoffs for prepared athletes.

Low-key trail running event in Loma, Colorado offering Half Marathon, Marathon (26.2 Miles) and 50 Miler with a flat $50 entry fee. Registration runs April 5 to August 1, and participants may change distance on race day.

A fall mountain event on September 13, 2026 featuring a 25K loop past Crystal Mill, an 8 mile Quarry Climb, and a 2.5K kids run, with a post-race BBQ and proceeds benefiting Marble Charter School.

A 13 mile mountain trail run in Ouray, Colorado on September 19, 2026, held as a fundraiser for the Ouray School. The course starts and ends at Fellin Park, has limited water stations, and packet pickup is offered the day before and race mo..

A 5k fundraiser in Telluride on the morning of Saturday, September 19 that supports the Telluride Adaptive Sports Program. The route starts and ends at Elks Park with river trail views and post-race music, beer and yoga.

Mountain trail ultramarathons in Crested Butte, Colorado on September 26, 2026 offer 35K, 55K and 50 Mile courses across alpine meadows and ridges. Aid stations are cupless and the event starts and finishes at Crested Butte Community School..

A high altitude trail half marathon near Telluride on September 26, 2026, covering about 13 miles of mostly singletrack through aspen woods, finishing in town with stocked aid stations and required alpine gear.

A scenic half marathon presented by ACG that runs from Fanny Hill in Snowmass along the Government Trail through Aspen groves to Koch Lumber Park, held each late September with registration opening in April.

Trail races of 50K, 28K, and 15K through Hartman Rocks near Gunnison Colorado featuring slickrock, singletrack and wide mountain views. The event includes participant swag and partnerships supporting youth and womxn trail running.

A point-to-point trail marathon and 30K in Colorado’s North Fork Valley that climbs to Inter-Ocean Pass and finishes in Paonia; proceeds fund Nature Connection summer camp scholarships.

A last person standing backyard ultra near Fruita, Colorado, run on a 4.167 mile mostly singletrack loop with about 500 feet of climb per lap. Runners are self-supported with limited crew access and receive a race shirt and finisher buckle.

Two trail race options starting and finishing at Camp 4 Coffee in Crested Butte South, on marked single track and dirt roads through the Gunnison National Forest; the event is fully self-supported.

A Halloween themed 3.1 mile trail run in Aspen with dogs welcome, timed results and cash prizes for top male and female finishers. The event features costume prizes, raffle items and food trucks, with proceeds benefiting the local animal sh..

A multi-distance trail ultramarathon in the North Fruita Desert near Fruita, Colorado, featuring fast singletrack and sections on the Zippity Do Da Trail. Courses range from 10 miles to 50 miles with detailed elevation profiles and cupless..

A three day trail running festival in Fruita, Colorado with four race distances on desert singletrack and mesa trails. The 100K offers a Western States qualifier while several distances earn UTMB Index and Running Stones.

A 150 hour timed trail event near Mack, Colorado where five off road routes form a roughly 55 mile Journey. Crewed and uncrewed divisions run under strict navigation and support rules with a single home base aid station.