Trail Running calendar near South Fork 2026-2027

A 100 mile loop through Colorado's Sawatch Range, the High Lonesome 100 covers about 23,300 feet of climb, includes 27 miles of the Continental Divide Trail and 35 miles of the Colorado Trail, and provides detailed maps and aid stations.

Mountain trail races in Silverton, Colorado on July 18, 2026. Distances include a 50K, a marathon and an 8.4 mile out and back that run on Alpine Loop and Kendall Mountain jeep roads near California Pass.

A mountain road race in Silverton, Colorado on July 19, 2026 featuring a 12-mile summit route and an 11K out-and-back. The event includes jeep road climbs, a final scramble, aid stations, a cupless policy, and a six-hour time limit.

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..

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 combined national high school trail championship and a citizens race on the Salida Mountain Trails in Salida, Colorado on July 25, 2026. The 5.4 mile singletrack course includes steep climbs, switchbacks and a high point near 7,558 ft.

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..

High Five 100 in Lake City CO is a self navigated 100 mile challenge visiting 24 proof points and checkpoints with a 48 hour cutoff. The unmarked route covers roughly 90 to 105 miles and more than 40,000 ft of elevation gain.

A high-elevation 100 mile mountain ultramarathon near Durango, Colorado on August 14, 2026, covering roughly 104 miles with about 19,000 feet of climbing, staffed aid stations, required safety gear, satellite tracking, and a 38 hour cutoff.

Point to point half marathon from Ouray to Ridgway, an out and back 10K at Frontier Park, and a one mile kids fun run in Ridgway; proceeds benefit the Mt Sneffels Education Foundation.

A 200 mile loop race through the La Garita mountains around South Fork, CO, reaching elevations just under 13,000 feet. Organized by Tempest Adventures, registration closes Aug 1 and the listed entry fee is 1268 USD.

A technical mountain race above Telluride, Colorado, with five route options across mining roads, singletrack and alpine tundra. Courses climb to elevations above 13,000 ft and focus on the high-elevation trail experience.

A 50 mile mountain endurance run in Ouray Colorado on August 29, 2026 with about 23,582 feet of climbing. The event requires eight hours of volunteer service or a $100 opt out donation and uses live SPOT tracking.

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

A mountain trail race in Creede, Colorado offering 2 mile, 12 mile, 22 mile and 50K routes through Willow Creek, historic mine sites and over the Continental Divide. The event is scheduled for September 5, 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.

A 13 mile trail race in Ouray, Colorado on September 19, 2026, that supports the Ouray School and begins and ends at Fellin Park. The event features packet pickup, three water stations, aid stations on course, and awards for top finishers.

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.

A multi distance trail and ultramarathon festival on the Rainbow Trail near Westcliffe, Colorado on September 26 and 27, 2026, featuring races from 8 miles to 100 miles, aid stations, drop bags, camping, and defined crew and volunteer rules..

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.