Trail Running calendar near Conifer 2026-2027

Trail races at Greenland Open Space in Larkspur, Colorado offer 4 mile, 8 mile, 25K and 50K distances on dirt double-track trails with aid stations and championship designation for the 50K.

Niwot's Challenge is an invitation-only navigational ultrarunning trial near Sedalia, Colorado. Entrants must use map and compass, carry mandatory gear, and complete long off trail loops with minimal aid.

A set of road and trail races in Garden of the Gods Park on May 2, 2026, offering 5K, 5-mile road and trail options and a 9.5-mile Double Take, with closed-traffic park roads, scenic rock formations, and on-course aid stations.

Collegiate Peaks Trail Run in Buena Vista, Colorado offers 25-mile and 50-mile loop options on single-track and jeep trails. Each loop starts near 8,000 feet and includes over 3,500 feet of elevation gain and loss.

Experience the 45th annual run along the scenic High Line Canal in Centennial. Enjoy chip timed 5K or 10K races followed by a pancake breakfast and beer garden.

Join the Aurora community for an untimed 1k fun run or a timed 5k race ending with an optional muddy obstacle course. This rain or shine event welcomes runners and walkers of all ages.

A women focused trail event at Cheyenne Mountain State Park offering distances from 4 miles to 50K across meadows, singletrack, and rocky ridgelines, with cupless aid stations and significant elevation change.

Trail races near Fort Collins in Lory State Park and Horsetooth Mountain Park offering 25 miles (about 5,500 ft gain) and 50 miles (about 11,000 ft gain) on mostly singletrack with staffed aid stations and a well marked course.

A community trail event in Kittredge, Colorado featuring a 7.4 mile route through local trails and a kids run based on one 0.15 mile lap per year of age. The race is manually timed and includes post race food and activities.

A multi-distance trail event at Mueller State Park featuring a 12 Hour timed format where runners draw colored balls to choose loops, plus 10k, half and marathon races on all-trail courses with a 225 runner capacity.

Multiple trail distances run from Buffalo Lodge in Colorado Springs with courses around Rampart Reservoir and Rampart Range Road, high points near 9,500 feet, limited onsite parking and a shuttle for the point to point 60K.

Samson's Revenge is a trail race at the YMCA of the Rockies in Estes Park offering 50k, 25k and 10k options. The course uses a roughly 10 km loop with a prominent Bible Point ascent and two aid stations.

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.

Spirit Trail Race in Buena Vista on May 24, 2026 offers marathon, half marathon and a 9k with start and finish at South Main Town Square near the Surf Hotel; proceeds support local outdoor and community groups.

Obstacle course weekend at Fort Carson near the Rocky Mountains, with Sprint 5K, Super 10K, Beast 21K and Ultra 50K races plus kids events and an obstacle workshop. The high elevation course features steep climbs, rugged trails and multiple..

A weekend running festival in Eaton, Colorado offering distances from 7K to 100 miles, relay teams and 36 hour options on a 2 mile groomed dirt loop, with on-site camping, glamping and amenities such as sauna, cold plunge and aid stations.

Trail ultramarathon near Buffalo Creek, Colorado offering 50 mile and 50K on soft surface singletrack with short double track sections. Part of the proceeds support the North Fork Volunteer Fire Department.

A 20K clockwise loop around Turquoise Lake that mixes hilly paved road and single track trail, held May 30, 2026, with $40 adult registration and free entry for youth 17 and under. Proceeds support local youth athletics and recreation.

A 10K trail race through Elk Meadow Open Space Park following Pioneer Trail clockwise around the meadow, with downhill sections along Highway 74 and wooded singletrack at the mountain base. The race is cup free and has no aid stations.