Trail Running calendar near Glenwood Springs 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.

Explore Gothic Mountain in Crested Butte on a 23.5 mile competitive or 17.85 mile recreational Nordic ski loop, raising funds for Crested Butte Nordic. Capped at 200, avalanche gear and a Colorado SAR card or hunting license are required.

Join Pyro's Push It Up River Trail Run on Memorial Day in New Castle to honor a fallen hero. Choose a family friendly 3.5 km riverside route or a scenic 7.7 km trail with climbs, wooded sections and river views.

The Race in the Clouds - Alma Dirt Festival will take place in Alma from Thursday 25 June 2026 to Sunday 28 June 2026. You can run between 6 and 13 miles.

Run the Life Time Leadville Trail Marathon or Heavy Half on June 27, 2026, tackling high alpine singletrack and dirt roads through historic mining country up to Mosquito Pass at 13,185 feet. Expect a challenging, possibly snowy race with fu..

Silverheels Trail Runs in Como, Colorado feature distances from 10 miles to 100 miles on high alpine singletrack and fire roads, averaging over 10,000 feet. Rugged scenery, big climbs and thin air make this a true high altitude trail challe..

Run or ride Crested Butte singletrack on July 11, 2026 with options from a rugged 25 km loop to a 15 km out and back for all levels. Expect big climbs, alpine views and limited aid so carry water and fuel.

Join the Life Time Silver Rush 50 Run in Leadville for a high alpine 50 mile out and back plus 15 mile and 5K juniors. With seven aid stations and Leadville Trail 100 Run qualifier spots, this is a true mountain challenge.

Run the trails atop Colorado's Grand Mesa on July 25, 2026 with distances from 30K to 50 miles. Revel in alpine meadows, lakes and technical singletrack, then relax with weekend camping, post race food, beer and finisher awards.

The Summit 200 is a 200 mile loop around Summit County Colorado that climbs into high alpine single track above 12,700 feet. Capped at 100 runners and requiring a prior 100 mile finish, it is a remote, high altitude test of endurance.

Experience high alpine trails above 10,600 feet at the Sheep Mountain Trail Runs in Fairplay Colorado on August 1, 2026. Choose from half marathon, 50k or 50 mile distances for a rugged, scenic challenge.

Run rugged high alpine trails around Aspen with 50K, marathon or half options, each climbing above 10,000 feet. Finish at Rio Grande Park during the Duck Derby festival with live music, food trucks and community fun.

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.

The Emerald Mountain Epic is a two day trail festival in Steamboat Springs blending mountain biking and trail running on rugged singletrack with big elevation gains. Enjoy fully stocked aid, a lively finish area, and proceeds that benefit l..

Take on the iconic Leadville Trail 100 Run, a 100 mile ultramarathon through the Colorado Rockies that climbs to Hope Pass and delivers breathtaking high altitude views. A true test of endurance and grit.

Run high country trails above Steamboat Springs at the Continental Divide Trail Run on August 29, 2026. Choose 50K, 16 Miler, or 5 Miler for stunning Yampa Valley vistas and challenging alpine climbs.

Epic point to point ultramarathon from Mt Crested Butte to Aspen across the Elk Mountains. Tackle 40 miles and over 6,000 feet of climbing on high alpine terrain while supporting Crested Butte Nordic.

Run the Cirque Series at Arapahoe Basin: a scenic 9.4 miles with 2,211 ft of climbing on high alpine trails around Montezuma and Little Lenawee. Finish in Mountain Goat Plaza with live music, food, and festival vibes.

Run Rabbit Run in Steamboat Springs, Colorado offers epic 50 mile and 100 mile trail races across high alpine peaks and the Continental Divide. Limited fields, a spirited team challenge and strong charity support make this a must do fall ul..

Race high alpine trails in Crested Butte, Colorado with 50 mile, 55K and 35K options that showcase mountain meadows, ridgelines and fall foliage. Expect big climbs, stunning views and a festival finish with custom swag for all finishers.