Trail Running calendar near Marble 2026-2027

Join the Gothic Mountain Tour in Crested Butte, a fundraising Nordic ski with competitive 23.5 miles and recreational 17.85 miles options. Limited to 200 skiers, enjoy alpine scenery and a festive finish at Magic Meadows Yurt.

Trail marathon, half marathon and 2 mile run in Salida, CO on March 14, 2026. Courses use dirt roads and narrow single track at elevations from 7000 to 9000 feet, with awards, race socks, and a 500 person combined cap.

Take on the Collegiate Peaks Trail Run in Buena Vista Colorado with 25 or 50 mile options through stunning high country. Mark the 36th anniversary with a memorable mountain trail challenge.

Challenge yourself on the scenic Up & Over single track from Flying Dog Ranch to Rock Bottom Ranch in Carbondale, CO. Choose 10 mile or 25K routes and enjoy a trail running weekend with films and community vibes.

Celebrate Memorial Day weekend with the Spirit Trail Race in Buena Vista, Colorado, a scenic trail event with marathon, half marathon and 9k options. Start in town square, enjoy Paddlefest fun, and support local nonprofits.

A Memorial Day trail event in Grand River Park, New Castle, offering a family friendly 3.5 km riverside route and a longer 7.7 km route over scenic hilltops, with matching virtual distance options.

Join the Leadville Trail 100 Run Camp in Leadville, Colorado, June 19 to 21 for a three day preview of the LT100 course. Enjoy guided day and night runs, gear demos, shuttles and recovery services for a full race ready experience.

A 50 mile high mountain trail ultramarathon in Lake City, Colorado on June 20, 2026. Entry is by lottery for a 300 runner field, the course has multiple creek crossing options, MAProgress tracking is required, and prior ultra experience is..

Race in the Clouds at Alma Cemetery Meadow offers high country trail running, mountain bike races and weekend camping at 10,600 feet. Choose from a trail half, 10K, multiple bike distances and free kids races for a weekend of alpine adventu..

Trail races in Leadville, Colorado that follow historic mining roads and single track and top out at Mosquito Pass at 13,185 feet. Distances include 26.4 miles and 15.46 miles, with multiple aid stations and on course nutrition.

High Trails Retreat in Buena Vista July 9 to 12 2026 offers daily runs of 10 to 20 miles and an optional Hope Pass or Sawatch 14er climb. Stay riverside, share meals, relax by the river and pick routes with the group.

A multi-distance mountain trail event near Como, Colorado on July 10–11, 2026 featuring routes from 10 miles to 100 miles, high alpine terrain above 10,000 feet, point-to-point and loop options, and specific qualifying and volunteer require..

A longtime Crested Butte trail event on July 11, 2026 offering a *25 km* loop, a *15 km* out and back, and a mountain bike route, all featuring significant climbing, limited aid, and unique prize traditions.

A high-altitude 50-mile out-and-back in Leadville with about 7,500 feet of gain, seven aid stations, off-site parking with shuttles, and LT100 qualifier coins; shorter 15-mile and juniors 5K options are also offered.

The Ouray 100 Mile Endurance Run is a rugged 100 mile trail race in Ouray, Colorado, with massive climbing across the San Juan Mountains. This unfussy, traditional ultramarathon culminates with a dramatic ascent to the Bridge of Heaven.

A high elevation 100 mile loop trail race in Colorado held July 17-18, 2026, covering roughly 23,500 feet of ascent. The route follows sections of the Continental Divide Trail and Colorado Trail, crosses five alpine passes, and passes two g..

Join the Powderhorn Mountain Trail Climb in Grand Junction for scenic 5K and 15K trail runs that celebrate local runners and outdoor community spirit. Volunteer spots are available and full refunds or deferrals are offered if severe weather..

Run scenic mountain trails around Aspen Snowmass at the Audi Power of Four Trail Run on July 18, 2026. Choose from 10K, 25K or an epic 50K and enjoy challenging terrain, alpine views and Audi supported race day energy.

Join TransRockies Run Pass to Pub for three days of alpine trail racing from Hope Pass to Red Cliff in Leadville, Colorado, with fully supported camp life, live music, showers and catered meals. Limited to 500 runners July 19 to 21, 2026.

Take on the high, broad Grand Mesa at over 10,000 ft on technical single track through alpine meadows, lakes and wildflowers. Choose a 50 mile, 55K or 30K route and enjoy camping, a post race BBQ and beer.