Trail Running calendar near Aspen 2025-2026

Take on the Summit for Life in Aspen on December 6, 2025 with options to race uphill, ride the scenic gondola, or join virtually. Celebrate afterward at the Sundeck with food, live music and awards.

Join collegiate and junior skiers for the USCSA Cross Country Ski Racing Festival in Granby, Colorado at Snow Mountain Ranch. Two days of classic and skate racing promise fast snow, college points and gear giveaways in a lively community at..

Circle Gothic Mountain in this scenic nordic ski tour in Crested Butte with two course options and a festive finish at Magic Meadows Yurt. Proceeds benefit Crested Butte Nordic.

Join the 21st Run Through Time in Salida, Colorado on March 14, 2026 for scenic high elevation trail races: marathon, half, and 2 mile. All registered runners get custom socks and proceeds benefit local trails and search and rescue.

Race The Ranch in Granby, Colorado invites snowshoers to tackle scenic looped courses at Snow Mountain Ranch across 5k, 25k, and 50k distances. Finishers earn a custom beanie and engraved camp mug in this supported winter adventure.

Take on the Collegiate Peaks Trail Run in Buena Vista, Colorado on May 2, 2026, a rugged mountain course along the Arkansas River. Choose 25 miles or 50 miles and tackle big elevation changes on scenic single track and jeep trails.

Join the Spirit Trail Race in Buena Vista on May 24, 2026 for marathon, half marathon or 9K during Memorial Day weekend and CKS Paddlefest. Scenic start at South Main Town Square and proceeds support local conservation and community groups.

Experience alpine single track, meadows and aspen groves at Granby Ranch on June 6, 2026, with options from a 50k, marathon and half to a 6 mile or the looped Elevation Challenge. Expect big climbs, stunning views, aid stations and a spirit..

Race in the Clouds at Alma Cemetery Meadow is a high country weekend of mountain bike, trail and off road duathlon racing at 10,600 feet. Multiple distances, youth events and on site camping create a true alpine festival vibe.

Run high alpine trails above Leadville, Colorado on June 27, 2026, with a rugged marathon and a shorter Heavy Half reaching Mosquito Pass at 13,185 feet. Expect old mining roads, stunning mountain views and a true high country challenge.

High Trails Trail Running Retreat in Buena Vista Colorado, July 9 to 12, 2026 offers guided trail outings of 10 to 20 miles and a possible group ascent of Hope Pass. Expect coaching, shared meals, and stunning mountain views.

Explore alpine single track at the Silverheels Trail Runs in Como, Colorado on July 10 and 11, 2026, with distances from 10 miles to 100 miles. Limited entries, stunning mountain views, and a buckle for 100 mile finishers.

Run or bike alpine singletrack to Green Lake at Grin & Bear It in Crested Butte on July 11, 2026. Choose loop or out and back distances that climb above 10,000 feet for huge views and a fast descent to town.

Experience Leadville's Silver Rush weekend in July 2026 with a rugged 50 mile out and back, a 15 mile option and a juniors 5K, plus a combined run and bike challenge. Enjoy high alpine views, big elevation and well stocked aid.

High Lonesome 100 is a rugged 100 mile mountain loop in Colorado, crossing five alpine passes and sections of the Continental Divide and Colorado Trail. Mid July racing delivers big climbs, sweeping alpine views, and a true endurance test.

Run three unforgettable stages across the Continental Divide near Leadville, Colorado, with epic fourteener views and campsite camaraderie each night. Choose the 51 mile Full Pint or 35 mile Half Pint, with limited entry for 500 runners.

Take on the Summit 200, a breathtaking 200 mile loop around Summit County, Colorado that climbs above 12,700 feet and delivers about 40,000 feet of gain. Expect remote high altitude single track, sparse aid and an epic endurance challenge.

Tackle high alpine trails at Sheep Mountain Trail Runs in Fairplay, Colorado on August 1, 2026, with options for a half marathon, 50k, or 50 mile. Expect rocky county and forest roads, aid stations, big views, and a supportive festival vibe..

Run the Aspen Backcountry on August 1, 2026, a rugged trail race from Rio Grande Park that climbs into high alpine terrain. Choose from marathon, 50K or heavy half courses and enjoy scenic singletrack, remote aid and festival vibes.

Run the Rockies Trail in Frisco, Colorado offers 5k, 10k and half marathon on scenic single track and dirt trails. Take in views of Dillon Reservoir and the Ten Mile Range with a lakeshore finish to cheer your arrival.