Trail Running calendar near Idaho Springs 2026-2027

A load bearing endurance event at Staunton State Park on September 5, 2026. Routes range from 6.5 to 21.5 miles with loads from 10 to 40 lb and proceeds benefit the Special Forces Foundation.

A multi-distance running event on a flat 1.05-mile loop in Longmont, Colorado, held September 11-12, 2026, honoring 9/11 with in-person and virtual options, race awards, on-course aid, and overnight food service.

A longstanding Nederland, Colorado running event offering a 5K road run, a 10K trail, and a trail half marathon, with family-friendly features, on-leash dogs allowed in the 5K, and costume encouragement.

Snow Mountain Ranch in Granby, CO offers five trail distances from 5K to 50K at the YMCA of the Rockies, with varied out-and-back and looped courses on dirt trails. The 50K allows a pacer on the final loop and multiple aid stations support..

A 13.5 mile trail half around Lory State Park near Fort Collins with about 2,000 feet of climb, marked singletrack, aid stations, and a free one mile kids race.

Trail ultramarathon in Empire, Colorado on September 12, 2026 offering point to point 50K and 22K courses. High altitude routes reach over 13,000 feet and prior ultra or high altitude trail experience is required or recommended.

A women's trail running event in Buena Vista, Colorado offering a Half Marathon and a 10k on mountain trails with views of the Collegiate Peaks and the Arkansas River. Organized by Trail Sisters to increase women’s participation in trail ru..

A trail race on Meadow Mountain in Minturn, Colorado offering an 11K and a 5K route across singletrack and meadows with stream crossings, scenic mountain views, on-course aid stations, and finish-line t-shirts and refreshments.

A trail race in Golden, CO featuring a 10-mile North Table Loop with bonus miles and a 5-mile route on Lithic Trail and Fairmount Canal Loop. Organized by BeyondHome to support families moving from homelessness to self-sufficiency.

A 13.3 mile mountain race from Manitou Springs to the 14,115 foot summit of Pikes Peak, gaining about 7,800 feet on the historic Barr Trail. The 2026 Ascent uses wave placement based on estimated times and invites elite competitors.

Experience a 26.2 mile mountain run from Manitou Springs to the summit of Pikes Peak and back. This historic event features over 7800 feet of elevation gain and a 10 hour time limit.

Expo Park XC is an old school grass cross-country meet in Aurora, Colorado, featuring creek crossings, a wooden footbridge and bale jumps. Races range from about 1 km for young children to a 5 km open race.

Experience the wild spaces of Northern Colorado with a weekend of trail races ranging from a half marathon to a 50 mile ultra through scenic forests and scout camp trails. Stay on site with available camping and community meals.

Experience desert style single track and forest roads with views of the Collegiate Peaks in Buena Vista. Choose between 50k or 30k distances as part of the multi sport 14er Fest.

Tough Mudder Colorado at Fort Carson on September 26, 2026 offers 15K and 5K obstacle courses with multiple obstacles and finisher items. Spectator passes, group packages, VIP options and volunteer programs are available.

A 24 hour loop endurance run on a 0.82 mile circuit atop the Palmer Divide in Palmer Lake, Colorado at 7,240 feet. Top overall finishers receive awards and early 100 mile finishers receive buckles; part of fees supports local parks.

A two-day trail and bike event in Estes Park featuring 31-mile bike and run options, a 15-mile heavy half, and a 62-mile duathlon, with rugged trails, significant climbs, and aid stations supporting competitors.

A scenic half marathon from Fanny Hill in Snowmass along the Government Trail through Aspen groves to Koch Lumber Park in downtown Aspen. Registration opens April 28, 2026; in store $80, online $105.

A point to point trail race from Vail to Minturn with 26K and 14K courses across Vail Mountain. Both routes feature alpine singletrack, scenic views of Mt. Holy Cross, staffed aid stations and a post race lunch voucher.

A *5K* trail run on Town of Breckenridge Trails that finishes at Blue River Plaza on Main Street during Breckenridge Oktoberfest. Field limited to 300 runners; first 250 registrants receive a long-sleeve technical tee and 21+ entrants get a..