Trail Running Calendar Colorado 2026-2027

Experience a unique trail event at Mueller State Park featuring traditional distances and a 12 hour challenge where the course is determined by the luck of the draw. Enjoy 100% unpaved trails in the scenic Colorado mountains.

Ram Party Trail Runs offers a scenic weekend on the trails around Rampart Reservoir near Woodland Park, Colorado. Choose from five distances, including a point-to-point 60K and a vert-heavy 50K. The event features stunning views of Pikes Pe..

Run the Sky Pilots Ouray Backyard Ultra in Fellin Park, completing a 4.167 mile loop each hour until one runner outlasts the field. Enjoy riverside trails, mountain views near 7,700 feet and shared aid.

A roughly 14 mile loop around Vallecito Reservoir in Bayfield, Colorado, combining paved road, dirt road and singletrack with about 1,000 ft of climbing. The event features four aid stations, a cupless policy and a post-race meal with live..

Kick off the trail running season in Eagle, Colorado, with a 14K or 6K race through scenic pinyon groves and single track trails ending with a festive afterparty.

Challengers tackle a 6 mile climb gaining 2000 feet of elevation to reach the South Rim of the Black Canyon. Choose between a timed run or a scenic walk ending with a mountain breakfast and park views.

Experience the beauty of the Roaring Fork Valley with a point-to-point trail race from Carbondale to Basalt. Choose between 10-mile and 28k distances featuring iconic single track trails and a festive finish at Rock Bottom Ranch.

Samson's Revenge is a trail race on the historic grounds of the YMCA of the Rockies in Estes Park. Runners can choose from 10k, 27k, or 55k distances on a challenging loop course. All participants receive a day pass to the YMCA and custom r..

The Farish Trail Race takes place on May 23, 2026 at the Farish Recreation Area in Woodland Park, Colorado. Participants can run a half marathon, 10K, 5K, or a free kids' one-mile event. The first 200 finishers get a special hat.

Test your endurance at this Golden Colorado event following the classic backyard format with 4.17 mile laps every hour. Support the Sun Valley Kitchen and Community Center while pushing for your personal best distance.

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.

The Pyro's Push It Up River Trail Run will take place in New Castle on Monday 25 May 2026. You can run 8 kilometers.

Test your endurance at high altitude with a range of obstacle course races from 5K to 50K held at the scenic Fort Carson Army Base near Pikes Peak.

Test your resilience on a scenic two mile dirt loop in Northern Colorado with distances ranging from 7k to 100 miles. Enjoy a festival atmosphere featuring glamping, saunas, cold plunges, and relay options for teams.

Experience a mountain trail ultramarathon through the scenic Buffalo Creek Recreation Area in Colorado. Choose between a 50 mile or 50K course featuring nearly 100 percent singletrack trails and stunning granite rock formations.

A last-person-standing ultra on Durango's Spurline trails. Run a 4.17-mile loop every hour until only one runner remains. All proceeds support local trail building and maintenance.

A 20K route around Turquoise Lake in Leadville, CO, running clockwise from Matchless Boat Ramp with paved and single track sections. Adult entry is $40 and under 18 run free. Parking is limited and a day use fee may apply.

Experience a scenic 5K trail run through subalpine forests and lakeside paths at the historic Leadville National Fish Hatchery. This cross country style event supports local youth athletics and recreation in the Leadville area.

Experience trail running in the Colorado Rockies at Snowmass Village. Choose between a single 6.6 mile loop or endurance challenges of 6 and 24 hours while enjoying mountain views and a village festival atmosphere.

Experience the Rocky Mountains at Granby Ranch Resort with distances ranging from 6 miles to a 14 hour elevation challenge. Runners navigate single track trails through aspen groves and alpine meadows with views of the mountain range.