Trail Running calendar near Denver 2025-2026

Enjoy a scenic 4 mile trail race and family hike through North Cheyenne Cañon in Colorado Springs, starting at Starsmore Visitor and Nature Center. Proceeds support Friends of Cheyenne Cañon, leashed dogs welcome, awards for top finishers a..

Hit the trails at Louisville Community Park for the 12th annual Louisville Trail Race, with 5K, 10K and half marathon options on scenic dirt trails. Enjoy live split tracking, post race festivities and a cupless sustainability focus.

Experience crisp late season trails at the Colorado Cold Rush Ultra in Colorado Springs, with 50K, half marathon and 10K routes that climb historic High Drive and Gold Camp Road. Expect big climbs, stocked aid stations and standout finisher..

Test yourself on high elevation winter trails at Staunton State Park with 50k, 16 mile, and 8 mile distances. Limited to 250 runners, this December race offers hearty aid stations and a unique finisher award for all finishers.

Take on the Thumbs Up Vertical Challenge in Estes Park for a grueling loop of steep single track and big views as you race to collect poker chips each lap. Limited to 30 runners, unique ascent patches reward milestone climbs and a special p..

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..

Tackle the Sourdough Snowshoe Race in Nederland CO on Jan 31 2026, a donation based backcountry challenge where snowshoes are required for the full route. Choose 18K or 30K and warm up at the finish with hot drinks and a warming tent.

Run winter trails at Cheyenne Mountain State Park across a two day weekend with timed 6 hour and 15 hour ultras plus 10k, half marathon and 20 mile options. Start and finish at Swift Puma Campground amid rugged climbs and variable February..

Race The Ranch at Snow Mountain Ranch in Granby Colorado on April 4, 2026 is a scenic snowshoe race with distances up to 50k on singletrack and groomed trails. Tackle challenging loops, enjoy on course aid, and earn a custom finisher mug.

Run the Ranch is a weekend trail festival at Sylvan Dale Guest Ranch in Loveland, CO, featuring 5K, 10K and timed 4, 6 and 12 hour events plus relays and virtual options. Enjoy varied ranch terrain, on course support, meal tickets for entra..

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.

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.

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..

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.

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.

Quad Rock 25/50 is a scenic trail race around Fort Collins featuring a rugged 25 mile loop with 5,500 feet of climb; 50 mile runners tackle the loop twice in reverse. Expect singletrack, big views, and well stocked aid stations.

Run scenic single track and forest roads around Rampart Reservoir at Ram Party Trail Runs in Colorado Springs on May 16, 2026. Choose from 15K up to a 55 mile test of grit, enjoy awards, high alpine views and on site lodging.

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.