Trail Running calendar near Nederland 2025-2026

The Lory Summer Trail Series will take place in Bellvue on Tuesday 25 August 2026. You can run 12 kilometers.

Join Rock Hawk Trail Races on August 29, 2026 at Philip S. Miller Park in Castle Rock for scenic rolling trail courses from 5K to 50K. Enjoy friendly aid stations, sweeping ridge views, and the chance to support local open spaces and trails..

Run steep, scenic high country around Steamboat Springs with 5 mile, 16 mile, and 50K options that climb above 10,000 feet. Starts and finishes on the Torian Plum Lawn, with remote aid stations and proceeds supporting trail maintenance.

Run the Cirque Series at Arapahoe Basin: a scenic 9.4 miles with 2,211 ft of climbing on high alpine trails around Montezuma and Little Lenawee. Finish in Mountain Goat Plaza with live music, food, and festival vibes.

Join the Ned Ned Run in Old Town Nederland, Colorado in September, a 44 year tradition offering road and trail distances from a scenic 5K to a tough half marathon. Family friendly and costumes encouraged; dogs on leash welcome in the 5K.

Run aspen groves and mountain trails at Snow Mountain Ranch in Granby, Colorado on September 12, 2026. Choose 5K to 50K routes on dirt and grass with aid stations and crew support.

Run a scenic 13.5 mile trail half through Lory State Park with big climbs and sweeping Rocky Mountain and plains views, plus a one mile kids race. Small field, pint glass finisher and a hearty post race breakfast make it a memorable day.

Run Rabbit Run in Steamboat Springs, Colorado offers epic 50 mile and 100 mile trail races across high alpine peaks and the Continental Divide. Limited fields, a spirited team challenge and strong charity support make this a must do fall ul..

Red Feather Trail Jamboree in Red Feather Lakes Colorado offers a weekend of scenic singletrack racing, camping and a community dinner at Ben Delatour Scout Ranch. Choose 50 Mile, 50K or Half Marathon, capped at 500 runners.

Test your limits at 24 Hours of Palmer Lake, a low key community driven endurance run atop the Palmer Divide at 7,240 feet. Short loop laps keep the vibe close and the first ten to reach 100 miles earn an on site buckle.

Join the Bear Chase trail running festival Oct 3 to 4, 2026 at Bear Creek Lake Park in Lakewood, Colorado with distances from 5K to 100K on scenic singletrack. Proceeds support Lakewood and Bear Creek open space projects.

Run scenic dirt trails and wide mountain views at the HRCA Wildcat Mountain Trail Races in Littleton, CO. Choose a 10 mile, 10K, or kids fun run and enjoy post race pancakes, medals, and a festive mountain day.

Explore scenic single track through aspen and pine in the Colorado Front Range at Indian Creek Trail Runs, with distances from 5 miles to 50 miles. Enjoy varied terrain, well stocked aid stations, limited camping and a unique finisher award..

Take on the Blue Sky Trail Marathon or Half around the hogbacks near Fort Collins, Colorado on scenic singletrack with rocky ridgelines and big views. Limited fields and stocked aid stations make for a focused trail race.

Take on scenic single track and dirt trails at Bear Creek Lake Park with a 5 mile option or a 10 mile double lap and skyline views. Celebrate at the finish festival with a shirt, a finisher mug for 10 mile runners, food and a shoe donation..

Tackle scenic single track trails at Bear Creek Lake Park in Lakewood CO with 5 km, 15 km, a 5 plus 15 double and a kids 1 km. Enjoy race swag and a pancake breakfast amid varied terrain and rolling hills.

Nov 7, 2026 in Lone Tree CO, tackle a scenic single loop 13.1 mile course on dirt and singletrack through Highlands Ranch Backcountry Wilderness. Aid stations, tech shirt, finisher medal, pancake breakfast, post race beer and cash prizes.

Join the 13th annual Louisville Trail Race on Nov 14, 2026 at Louisville Community Park with half marathon, 10K and 5K courses on scenic dirt trails near the Flat Irons. Expect climbs, aid stations, and a lively community finish.

Experience winter trail running at Staunton State Park with the Sawmill Trail Runs offering 50k, 16 mile and 8 mile options on scenic high alpine trails. Enjoy well stocked aid stations, a finisher medal and stunning mountain views.