Trail Running calendar near Brighton 2025-2026

BINGO! Trail Party at May Farms in Byers CO is a looped trail party on a working farm with zero pavement and a friendly community vibe. Run loops, pull bingo chips to tally distances up to 54 miles with a main aid station and camping.

Take on the 17th annual HRCA Backcountry Wilderness Half Marathon in Lone Tree, Colorado on November 8, 2025. Enjoy a scenic 13.1 mile trail loop through Highlands Ranch backcountry with classic November conditions, plus a pancake breakfast..

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.

Challenge yourself in the Thumbs Up Vertical in Estes Park, an 8 hour timed ascent limited to 30 runners. Each 540 ft steep scenic single track lap earns a poker chip, with milestone patches and a prize for the overall winner.

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.

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..

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 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.

Summits Trail Runs in Granby Colorado on June 6, 2026 offers multiple distances and a timed Elevation Challenge scored by total climb on looped laps. Enjoy mountain views, well stocked aid stations and a unique finisher medal.

The Great Divide Ultra in Mueller State Park, Divide Colorado on June 6 and 7, 2026 offers 25k to 100 mile courses and a Saturday night trail run at sunset. Enjoy rolling meadows, granite views and a true mountain ultra festival atmosphere.

Run the Crazy Legs 10k+ at Devils Backbone Open Space in Loveland, Colorado on June 7, 2026. Scenic loop trails, on course aid, and a lively postrace awards celebration at Loveland Aleworks make this a not to miss local trail event.