Trail Running calendar near Westminster 2025-2026

Take on scenic, high elevation singletrack at Staunton State Park with choices of 50K, 16 mile, or 8 mile courses. Limited field, well stocked aid stations, and a finisher shirt and medal make this mountain trail race a memorable challenge.

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..

Join the Freakin Freezin 5K in Denver on January 25 for a chilly, car free, flat trail run at Northfield High School with medals for all finishers. Choose a 5K, a no shirt option, or run virtually and score a finisher package.

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 scenic singletrack at Cheyenne Mountain State Park during the Stories Trail Runs on Feb 21 and 22, 2026. Timed six and 15 hour challenges plus 10k, half marathon and 20 mile options offer something for every trail runner.

Race The Ranch in Granby, Colorado invites snowshoers to tackle scenic looped courses at Snow Mountain Ranch across 5k, 25k, and 50k distances. Finishers earn a custom beanie and engraved camp mug in this supported winter adventure.

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 on April 18, 2026 in Highlands Ranch CO features 21 mile, half marathon, 10K and 5K on scenic dirt trails and bike paths. Courses offer rewarding climbs and aid stations; cupless event so bring or buy a reusable cup.

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 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 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.

Choose from 15K to 55 mile routes and explore scenic single track and forest roads around Rampart Reservoir, starting at Buffalo Lodge Bicycle Resort. Expect high alpine views near 9,500 feet, aid stations and a finisher award.

Run the North Fork 50 Mile or 50K on May 30, 2026 in Buffalo Creek, Colorado, through ponderosa pine and granite views on all soft singletrack. Celebrate at a finish festival while supporting the North Fork Volunteer Fire Department.

Run the Summits Trail Runs at Granby Ranch Resort in Granby, Colorado on June 6, 2026. Choose distances from 6 miles to a 12 hour Elevation Challenge across scenic single track, alpine meadows and big climbs.

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.

Take on the Crazy Legs 10k trail run through the scenic Devil's Backbone Open Space in Loveland on June 7, 2026. Limited spots, marked trails, and a post race celebration at Loveland Aleworks make this a fun mountain running day.