Trail Running calendar near Copper Mountain 2025-2026

Run the Colleen De Reuck XC Classic in Boulder on November 1, 2025 at Harlow Platts Community Park. Youth and open cross country races celebrate local distance legends and offer scenic fall competition as part of the Boulder XC series.

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.

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.

Run the Sawmill Trail Runs at Staunton State Park on Dec 6 with 50k, 16 mile, and 8 mile options through alpine meadows and granite cliffs. High elevation, a limited field, and well stocked aid stations promise a scenic, challenging winter..

USCSA Cross Country Ski Racing Festival, hosted by Colorado Mesa University at Snow Mountain Ranch Nordic Center in Granby, Colorado, on January 24–25, 2026, brings collegiate teams together with junior skiers for a two-day Nordic festival...

Push your limits at the 12 Hours of Sunlight in Glenwood Springs, a 12 hour skin up and ski down endurance challenge on 1.3 mile laps with huge vertical gain per lap. Teams and individuals enjoy fuel stations, post race food and gear prizes..

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.

Gothic Mountain Tour is a scenic Nordic ski fundraiser in Crested Butte on Feb 15, 2026 supporting Crested Butte Nordic. Choose 23.5 miles competitive or 17.85 miles recreational and finish at the Magic Meadows Yurt.

Run Through Time in Salida Colorado offers marathon, half, 2 mile and kids 400 meter races on scenic high altitude Arkansas Hills trails. Limited fields, single track terrain and custom race socks make for a memorable spring trail day.

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.

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 trails with Pikes Peak views at the Greenland Trail Races in Larkspur on May 2, 2026. Options from 4 miles to the RRCA National 50K Championship include chip timing, tech shirts, finisher medals and a 50K buckle.

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..

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.

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 at Granby Ranch Resort on June 6, 2026 offers single track through alpine meadows and aspen groves. Choose distances from 6 mile to 50k or take on the multi loop Elevation Challenge.

Run Great Divide Ultra June 6 and 7 2026 in Divide Colorado with distances from 25k to the first Colorado 100 mile on scenic loops in Mueller State Park. Expect big climbs, crew friendly aid, finishers awards and a post race meal.

Run scenic dirt trails around Barr Lake State Park, with continuous lake and Front Range views. Distances range from a 5K up to a challenging 50K, with looped courses, aid stations on longer laps and a cupless race policy.