Trail Running Calendar Colorado 2025-2026

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.

Run scenic singletrack at the Rattler Trail Race in Palmer Park, Colorado Springs, with options from 5K to 50K that pass sandstone bluffs and offer Pikes Peak views. Technical but rewarding trails suit a range of abilities.

Hit the scenic Great Western Trail in Severance on April 18, 2026 with 5K, 10K, half marathon and kids fun run options for every level. Enjoy chip timing, finisher shirt and medal, plus post race food and beer while supporting local nonprof..

Mountain Ridge Trail Race in Highlands Ranch, Colorado on April 18, 2026 offers 5K to 21 mile routes on scenic dirt single track and bike path. Enjoy challenging climbs, friendly finish vibes and a spring trail experience for all levels.

Take in cliffside views along the Royal Gorge rim on rocky, technical trails with distances from a kids mile to a 50K. Starts and finishes at Royal Gorge Ranch in Cañon City on Apr 25, 2026 with camping and a bike event the next day.

Take 5 in the Garden invites runners to explore Garden of the Gods in Colorado Springs with road and trail distances. Enjoy traffic free courses past red rock formations and views of snow capped Pikes Peak.

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.

Niwot's Challenge in Sedalia on May 2, 2026 is invitation and acceptance only, not a race, testing rugged off trail navigation and self sufficiency across punishing loops with massive elevation gain. Traditional entries rely on map and comp..

Run scenic dirt trails with views of Pikes Peak at the Greenland Trail Races on May 2, 2026, featuring 50K, 25K, 8 mile and 4 mile options. All finishers get a technical shirt and medal and 50K finishers earn a commemorative buckle.

The Pilgrimage is a 150 hour ultra in Colorado's high desert where runners repeat five off road routes about 55 miles per circuit. Only 45 spots and crewed or uncrewed divisions share a single home base with basic support.

Quad Rock 25 and 50 deliver rugged singletrack and big Colorado climbs around Fort Collins, offering a 25 mile single loop or 50 mile double loop with roughly 5,500 or 11,000 ft of gain. Entries are capped and registration opens Dec 15, 202..

Adventure Fest at 18 Road in Fruita CO on May 9 to 10, 2026 is a weekend of mountain bike, gravel and trail running action with camping and a lively community vibe. Bring the crew for clinics, kids races, guided trips and evening awards.

Join the Valkyrie Trail Race on May 9, 2026 at Cheyenne Mountain State Park for a women focused day of stunning singletrack, rocky descents and springtime views. Distances from short runs up to 50K ultramarathon welcome all levels.

Enjoy the Fruita Trail Half, a 13.8 mile singletrack loop in the North Fruita Desert with nearly 1,000 feet of climbing, switchbacks and striking butte views. Part of Adventure Fest, it starts and finishes at the same scenic trailhead.

Endure Trail Runs at Mueller State Park: scenic single and double track courses offering 10K, half, marathon and a quirky 12 hour loop event where runners draw loop colors. Small field, central aid and on site camping.

Ram Party Trail Runs in the Colorado Springs Woodland Park area offers distances from 15K to a rugged 55 Mile course around Rampart Reservoir and Rampart Range Road. Enjoy stunning high country trails, finisher awards and podium prizes.

Race the Sky Pilots Ouray Backyard Ultra in Fellin Park on May 16, 2026. Complete a 4.167 mile loop each hour until one runner outlasts the rest, with scenic river walk views and supportive aid station service.

Weld Your Mettle Running Festival in Eaton, Colorado on May 30-31, 2026 invites runners to repeat a scenic four mile loop for distances from a 7K up to 100 miles, plus relay and virtual options. Expect stocked aid, finisher swag, recovery t..

Run the 50 Mile or 50K in Buffalo Creek Colorado on scenic singletrack through ponderosa pines, granite outcrops and burn areas. Proceeds support North Fork Volunteer Fire Department and finishers get food, drinks and a commemorative award.

Join Aiden's Adventure 5k at Fountain Creek Regional Park for a relaxed, family friendly trail fun run with a virtual option and a kids mile. Enjoy crafts, a butterfly release, food trucks and community vibes while supporting local charitie..