Trail Running calendar near Frisco 2026-2027

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 Fourth of July 5K in downtown Leadville, organized by the Leadville Sports Hall, with youth entry free and proceeds supporting local youth athletics.

A 12.2K uphill trail race in Vail, Colorado marking its 50th running, the Vail HillClimb gains 2,128 feet across dirt and gravel service roads to finish at Mid-Vail, with aid stations, race shirts, awards by age group and a post-race raffle..

Community outdoor event in Golden offering a 12 mile bike ride, a 5 mile hike, and a 10 mile run at South Table Mountain. Participants must sign a Latinos Outdoors waiver and bring appropriate gear.

A high altitude trail running event in Como and Grant, Colorado offering ultras and shorter trail distances across alpine meadows, single track and historic mining terrain, with aid stations, drop bag options, crew and pacer rules.

A trail event at the Crested Butte Nordic Center featuring a 15 km out and back run, a 25 km loop run, and a technical 25 km mountain bike race with alpine climbs and a Green Lake checkpoint.

A high-altitude out-and-back ultra in Leadville with about 8,000 feet of gain over 50 miles, multiple aid stations, and an LT100 Run qualifier; additional 15-mile and juniors 5K distances are offered.

The STRS Horseshoe Gulch Grind will take place in Breckenridge on Wednesday 15 July 2026.

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.

A three day 120 miles trail running event near Buena Vista Colorado using charity bibs that require a minimum $2,000 fundraising commitment. Successful fundraisers receive a registration code and donations are final and distributed in Decem..

Trail races on the Spring Creek trail start and finish near the gazebo on Spring Creek Road. Options include a 9.5 mile loop with significant early climbing and a 5K out and back; the event is cupless and includes awards plus a raffle.

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.

High-altitude trail races on Vail Mountain offering 10K and 5K courses that start near Gondola One, feature singletrack and gravel sections, on-course aid stations, post-race refreshments, and age-group awards.

Repeating 2 km out and back laps on the Thumb Open Space trail in Estes Park. Participants collect a poker chip at each turnaround and the most chips wins during a sunup to sundown timeframe; 35 spots and a $100 entry fee.

A community trail event at JCC Ranch Camp on Saturday July 18 offering 5k and 10k trail options, sliding scale entry, on course water and clinic support, plus post-race tie dye and craft activities for finishers.

Alpine ultramarathons in State Forest State Park between the Never Summer and Medicine Bow ranges. Options include 100 km, 60 km or both, with high elevation terrain, staffed aid stations and limited cell service.

Held July 25, 2026 in Conifer, Colorado, the Elevation Run/Walk offers a 10K, a USATF certified 5K and a 2 mile fun run while raising funds for local school boosters and leading into the Elevation Celebration festival with music and vendors..

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 community 4 mile road run in Carbondale tied to the Mountain Fair, finishing at Sopris Park. Entry fee is $40 with free youth entry and proceeds benefiting Carbondale Arts.

Experience a historic Colorado tradition where runners and burros compete together. Navigate mountain trails and high altitude passes while carrying traditional mining gear in this unique world championship event.