Trail Running calendar near Larkspur 2026-2027

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..

Chase the Moon is an overnight fixed time trail event in Highlands Ranch, Colorado with solo 12, 6 and 3 hour races, a 50K and three and five person relays. Runners complete marked loops on dirt trails with aid stations and drop bag support..

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 10 kilometer trail race at Alderfer Ranch in Evergreen Colorado on June 27 2026. The event includes shuttles from Wulf Rec Center, vendor tents, on-site food and water refill stations while the course is supported by course marshals.

A professional pack burro race in Cripple Creek during Donkey Derby Days, featuring a 6 mile urban course, chip timing, checkpoint support, animal welfare rules, on-site activities and monetary awards.

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, CO, held above 10,000 feet. Proceeds support local youth athletics and youth entries are free.

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 high-altitude, approximately 50-mile out-and-back trail run around Leadville with about 7,500 feet of elevation gain, marked aid stations, drop-bag service, shuttle-required parking, and LT100 qualification opportunities.

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 two day festival in Centennial Park, Cañon City on July 17–18, 2026 featuring whitewater competitions and land based events. The program includes running and mountain bike races, raft rodeo, SUP activities, cardboard boat races and a ween..

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.

Experience a historic mountain run on Pikes Peak climbing to an altitude of 10,200 feet. This 12.6 mile trail race features a 3,630 foot vertical gain through the scenic landscapes of Manitou Springs.

A three-stage trail race in Colorado offering Full Pint (51 miles) and Half Pint (35 miles) options, with campsite support, meals, showers and therapy services; registration is limited to 500 runners.

Experience the mountain trails of Colorado Springs at the Pikes Peak Ultra. Choose from four race distances that take you through high elevation terrain including Cheyenne Canon and the summit of Mt. Rosa.

A mountain fundraiser in Conifer, Colorado on July 25, 2026 featuring a 10K, a USATF certified 5K, and a 2 mile fun run, followed by a street festival with live music, vendors, and family activities.

National High School Trail Championships and Beas Knees Citizens Race The National High School Trail Championships and the Beas Knees Citizens Race take place on July 25, 2026, on the Salida Mountain Trails in Salida, Colorado. The high sch..

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.