Trail Running calendar near Brighton 2026-2027

Experience high alpine trails above 10,000 feet at the Silverheels Trail Runs in Como, Colorado, July 10 to 11, 2026, with distances from 10 mile to 100 mile across scenic single track, meadows and historic mining sites. Limited fields make..

Take on the Barr Trail Mountain Race in Manitou Springs, Colorado, a rugged 12.6 miles up to Barr Camp on Pikes Peak terrain and back to the trailhead. Part of the Garden to Peak Challenge, this summer favorite fills fast so register early.

Summit 200 is a single loop 200 mile mountain ultramarathon from Frisco, Colorado, with sections above 12,700 feet and about 40,000 ft of elevation gain. Expect remote single track, limited aid, a 110 hour cutoff and a 75 runner cap requiri..

Experience the Wild West Relay, a scenic point to point 200 mile run from Fort Collins to Steamboat Springs. Solo runners and teams of every size are welcome, with live GPS tracking and a mountain finish at Steamboat Springs Ski Resort.

Run a scenic mountain 50K or 10K from Winter Park Resort into town with flowing singletrack, aspen groves and views of the Continental Divide. Expect changing high altitude conditions, full aid stations and a finisher award.

Take on the Lory Summer Trail Series at Lory State Park in Fort Collins: four midweek chip timed trail races across August with points, awards, and vintage Gnar shirts. Enjoy pizza and post race drinks for a fun community vibe.

Run the Rockies Trail in Frisco, CO features 5K to half marathon routes on the scenic Frisco Peninsula with lakeshore finishes and reservoir views. Finishers receive a gift and an afterparty with food, music and beer for 21+.

Run along Boulder Reservoir on flat, mostly dirt trail courses with sweeping Rocky Mountain views. Choose from 10K, 3 4 marathon, half, full marathon or relay, with USATF certified courses, a shirt and a finisher medal.

Roxborough Ultras features 50K and 50M all trail ultramarathons in Roxborough State Park with sustained climbing, technical terrain, and big elevation gain. August is hot and dry with limited shade and spaced aid stations, so carry water an..

Join the Into the Hills Eltuck 5k, part of a four race midweek trail series at Lory State Park in Bellvue. Chip timing, series points and vintage Gnar shirts add fun, while varied valley and hill courses challenge every runner.

Tackle a rugged 10k through Lory State Park with roughly 1,700 feet of climbing and chip timed results in this midweek trail series. Grab a vintage Gnar shirt and enjoy pizza and drinks after the run.

Run the Byers Peak Stampede in Fraser Colorado for a scenic half marathon or 5K on high country dirt roads with Rocky Mountain views. Family and dog friendly event with proceeds benefiting families affected by cancer.

Staunton Rocks! Marathon and Half deliver high altitude singletrack through Staunton State Park, offering sweeping mountain views, alpine wildlife, and serious vertical gain. With just 150 spots per distance, this rugged trail run fills fas..

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

Run Rock Hawk Trail Races at Philip S. Miller Park in Castle Rock with 5K, 10K, 25K and 50K on rolling singletrack and scenic ridge views. Proceeds support open space and the race offers chip timing and live split tracking.

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 American Heroes Run in Longmont, Colorado on September 11 and 12 to honor the victims and first responders of 2001 on a flat, fast 1.05 mile loop. Choose distances from 5K to 100 mile with timed and virtual options plus shirts and..

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 high alpine trails at Snow Mountain Ranch in Granby Colorado on September 12 2026. Choices from 5K to 50K plus Moosehead challenges, scenic dirt and grass routes with on site lodging and camping.

Take on the Black Squirrel Half Marathon in Lory State Park, a scenic 13.5 mile trail challenge with about 2000 feet of climbing across high country singletrack. Limited to 400 runners, it delivers tough climbs and sweeping mountain views.