Trail Running calendar near Beaver Creek 2026-2027

A one-day festival in Lyons on June 20, 2026 that combines gravel and road bike rallies, several trail runs, live music, camping and on-site pools. Featured formats include a 100K enduro, a 50K rally and a 5 mile run.

A multi-event Colorado series of four half marathons and a 25K across summer 2026, organized by HAL Sports with races run by local nonprofits. Participants may register for three, four, or all five events.

A community-focused trail festival in Gold Hill, Colorado, with 28K, 12K, 5K and Kids 1K races, a shuttle from Boulder, and proceeds supporting wildfire preparedness for the town.

At 10,600 feet in Alma, Colorado, Race in the Clouds is a June 25 to 28 Dirt Fest featuring mountain biking, trail running, off road duathlon, youth races and meadow camping, with USA Triathlon sanctioning and age group awards.

A 26.4 mile trail marathon and a 15.46 mile Heavy Half on Leadville mining trails, topping out at Mosquito Pass 13,185 feet. Both races feature multiple aid stations, specified parking and shuttle arrangements, and the marathon serves as an..

A backyard ultra on the paved Lake Estes trail where runners complete 4.252 mile loops each hour until one runner finishes a loop alone. The event records yards for DNFs and offers on-site aid and athlete village space.

A trail run at Howelsen Hill offering 5K and 10K options on single track trails, held alongside the SBT GRVL bike event. Awards and a post race celebration take place at Little Toots Park.

Experience a half marathon in the mountains of Nederland Colorado. This event features a significant elevation gain of 4226 feet with the summit always in view.

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.

A 5k trail race at Alderfer Ranch in Evergreen, CO with a course through Alderfer/3 Sisters Park. Shuttle service runs from Wulf Rec Center and on-site vendors, games, and food are available. Internet registration is not yet open.

A 5K run/walk in Winter Park, Colorado following the Fraser River Trail from Gondola Plaza to the Rendezvous Event Center, with an after party featuring refreshments, awards and prize giveaways.

A downtown Leadville Fourth of July 5K held above 10,000 feet, with adult fees rising from $25 to $30 after July 2 and free entry for youth 17 and under. Proceeds support local youth athletics and recreation.

A mountain trail race on July 5, 2026 in Vail, Colorado covering 12.2 km with about 2,128 feet of climb, starting at Vail’s Mountain Haus and finishing at Mid-Vail. Aid stations, race shirts, awards and postrace refreshments are provided.

Experience high altitude trail running through historic Colorado ghost towns and mines at over 10000 feet. Choose from distances ranging from 10 miles to 100 miles in the scenic South Park Valley.

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 high-altitude 50-mile out-and-back on dirt roads through Leadville’s historic mining district, with 7,503 feet of gain, seven aid stations, and LT100 qualifier coins available to finishers.

Experience the STRS Horseshoe Gulch Grind in Breckenridge with short and long course options. This trail event offers categories for adults and youth starting from the Blair Witch Trailhead.

A 100 mile loop in Colorado’s Sawatch Range, the High Lonesome 100 covers about 23,300 feet of elevation gain and includes long sections on the Continental Divide and Colorado Trail with a 37 hour cutoff.

Trail races on Spring Creek Trail in Steamboat Springs featuring a 9.5 mile scenic loop with about 1,750 ft gain and a rolling 5K out and back, plus a prize drawing and a post-race meal by Freshies.

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.