Trail Running Calendar Colorado 2025-2026

Lace up for the Rio Frio 5k on Ice and run across the frozen Rio Grande in Alamosa, CO on January 24, 2026. Chip timed with ice themed awards and a festive winter vibe for adventurous runners.

The Sourdough Snowshoe Race will take place in Nederland on Saturday 31 January 2026. You can run between 18 and 30 kilometers.

Gothic Mountain Tour takes place in Crested Butte, Colorado. It features two ski races: a 23.5-mile competitive course and a 17.85-mile recreational route around Gothic Mountain, finishing on the Crested Butte Nordic trail system at the Mag..

Event overview The Stories Trail Runs take place February 21-22, 2026 at Cheyenne Mountain State Park in Colorado Springs, CO. The combined runner capacity is 225. The event includes timed ultras and traditional distance races, with staging..

Pine Needle Langlauf at Durango Nordic Center offers freestyle Nordic racing on scenic, challenging terrain across multiple distances. Finish the Southwest Nordic Race Series with live music, awards and participant schwag.

Event overview The 21st Annual Run Through Time takes place on Saturday, March 14, 2026, in Salida, Colorado. The event includes the following distances: Marathon Half marathon 2 Mile run Kids’ 400 meter run The marathon is open to ages 1..

Race The Ranch invites snowshoers to YMCA Snow Mountain Ranch in Granby Colorado on April 4 2026 for multiple distances on scenic trails and lesser known loops. Expect challenging climbs, friendly aid stations and great finisher swag.

Run the Ranch is an annual trail running event held at the scenic Sylvan Dale Guest Ranch in Loveland, Colorado. The race offers a variety of distances including 5K, 10K, and timed trail runs of 4, 6, and 12 hours, with options for solo run..

The Desert Rats Trail Running Festival will take place in Fruita from Friday 10 April 2026 to Sunday 12 April 2026. You can run between 9 and 100 kilometers.

The Great Western Trail Race, held in Severance, Colorado, offers a variety of running events including a 5K, 10K, half marathon, and a Kids Fun Run. Scheduled for April 18, 2026, this race welcomes participants to enjoy spring racing in a..

Experience singletrack through Palmer Park's sandstone bluffs and rock formations with panoramic views of Colorado Springs and Pikes Peak. Trail options range from 50K to 5K, offering technical terrain with minimal elevation gain for all ab..

Royal Gorge Groove - Cañon City, CO Royal Gorge Groove is a trail running event held Saturday, April 25, 2026, at Royal Gorge Ranch & Resort in Cañon City, Colorado. All races start and finish at the resort (Gunslingers Club) and use tr..

Run through Garden of the Gods on May 2, 2026 with roads closed to traffic for a safe, scenic outing. Choose road or trail routes that pass iconic rock formations and offer stunning views of Pikes Peak.

Niwot’s Challenge is an invitation only, navigation driven ultra near Sedalia CO that emphasizes self reliance on rugged off trail terrain. Choose roughly 24, 50, or 100 mile routes with massive elevation gain and strict no GPS rules for a..

Run scenic dirt trails in Greenland Open Space near Pikes Peak with 50K, 25K, 8 Mile and 4 Mile options, highlighted by the 2026 RRCA National 50K Championship. Expect sweeping views, solid race swag and a lively trail day atmosphere.

The Pilgrimage is limited to 45 runners and unfolds over a 150 hour window in the high desert near Mack, Colorado as athletes loop five off road routes from a single home base. Finishers must complete four Journeys, about 220 miles, and the..

Adventure Fest at 18 Road in Fruita CO on May 9 and 10 2026 brings races, camping, clinics and guided canyoneering on Fruita trails. Join half marathon and 50K events, kids races, glow rides, sponsor booths and on site camping.

Tackle spring singletrack and rocky descents at the Valkyrie Trail Race in Cheyenne Mountain State Park, a women focused trail event. Choose from 4 Miler to 50K and soak up big mountain views and rugged fun.

The Quad Rock 50 will take place in Fort Collins from Saturday 9 May 2026 to Sunday 10 May 2026. You can run between 25 and 50 miles.

The Fruita Trail Half Marathon will take place in Fruita on Sunday 10 May 2026. You can run 14 miles.