Trail Running Calendar Colorado 2026-2027

An 8K T&H race on February 1, 2026 at Edora Park in Fort Collins for Fort Collins Running Club members only; a bib is required and volunteers are welcome.

Join the Super Sunday 5K on February 8, 2026 in Littleton for a scenic run along the Mary Carter Greenway. Celebrate at a post race party at Breckenridge Brewery Farmhouse with 20% off food and drinks and community fun.

A two-person partner race on Virginia Canyon road in Idaho Springs, CO, held on Valentine’s Day. Runners each complete a roughly 12-mile out-and-back; team time is the sum of both individual times and multiple awards are offered.

Join the Gothic Mountain Tour in Crested Butte, a fundraising Nordic ski with competitive 23.5 miles and recreational 17.85 miles options. Limited to 200 skiers, enjoy alpine scenery and a festive finish at Magic Meadows Yurt.

A two-day winter trail event at Cheyenne Mountain State Park featuring timed multi-loop ultras, fixed-distance trail races, a single main aid/staging area, and a combined 225-runner capacity.

A freestyle cross-country ski race at Durango Nordic Ski Club with big climbs, mountain views, and groomed snow. Multiple distances are offered and the event serves as the grand finale of the Salomon Southwest Nordic Race Series.

Join Uncle Clyde's Run & Slide at Purgatory Resort in Durango on Feb 28 for a fun team relay where pairs sprint up the tubing hill, slide down and tag off for 60 or 90 minute races. Costumes, cold weather gear and big laughs encouraged.

Trail marathon, half marathon and 2 mile run in Salida, CO on March 14, 2026. Courses use dirt roads and narrow single track at elevations from 7000 to 9000 feet, with awards, race socks, and a 500 person combined cap.

Race The Ranch is a snowshoe race at Snow Mountain Ranch near Granby, Colorado on April 4, 2026, offering 5k, 25k and 50k looped courses over scenic groomed and singletrack snow trails. Finishers receive a custom beanie and engraved Miir ca..

A three-day trail running festival in Fruita, Colorado with four distances on desert singletrack and slickrock. The 100K serves as a Western States qualifier and select races award UTMB Index Running Stones.

Trail races on private ranch trails at Sylvan Dale Guest Ranch in Loveland, Colorado over two days in April 2026. Events range from 5K and 10K to 4, 6 and 12 hour timed races plus relay and virtual options.

Mountain Ridge Trail Race in Highlands Ranch, CO features 21 mile, half marathon, 10 km and 5 km courses on mostly dirt single track with rolling hills and front range views. The event uses cupless aid stations and finishes at Mountain Ridg..

Take on the scenic Poudre River Trail April 11 and 12 2026 in Northern Colorado with 50 and 100 mile solo and relay options. Stocked aid stations, finisher swag, belt buckles for solos and a lively post race party await.

The Rattler Trail Race will take place in East Colorado Springs on Saturday 18 April 2026. You can run between 5 and 50 kilometers.

Celebrate Earth Day in Durango with a scenic 5K along the Animas River Trail starting and finishing at Rotary Park. This zero waste run supports Compañeros and pairs perfectly with the town's Earth Day parade and festival.

On April 25, 2026 Royal Gorge Groove in Cañon City offers trail races from 5K to 50K along the rim of the Royal Gorge about 900 feet above the Arkansas River, with aid stations, camping and nearby lodging options.

Four trail distances plus a virtual option at Greenland Open Space near Larkspur on May 2, 2026, including the 2026 RRCA National 50K Championship. Dirt trails and looped circuits offer Pikes Peak views, aid stations, chip timing and on-sit..

Niwot's Challenge is a by invitation only endurance event near Sedalia, Colorado that prizes off trail navigation and self reliance over racing. Limited to 40 entrants, it offers routes up to 100 miles for experienced wilderness runners.

Take 5 in the Garden offers road and trail race options through Garden of the Gods Park in Colorado Springs on May 2, 2026. Courses run on roads closed to traffic and pass iconic rock formations with views of Pikes Peak.

The Pilgrimage is a multi route ultramarathon in the high desert near Mack, Colorado, where 45 runners have 150 hours to complete 55 mile Journeys. Choose crewed support or go uncrewed; navigate five rotating off pavement routes for a raw,..