Trail Running calendar near Aurora 2026-2027

Trail races in Larkspur, Colorado offering four on site distances from 4 miles to a 50K ultra plus virtual options. Chip timing, technical shirts, and food and beer at the finish accompany soft dirt courses with Pikes Peak as a backdrop.

A road and trail running event in Garden of the Gods Park on May 1, 2027 offering 5K, 5 mile, and a 9.5 mile option with closed roads, multiple aid stations, and views of the park's iconic rock formations.

A women focused trail running event at Cheyenne Mountain State Park on May 8, 2027 offering distances from 4 mile to 50K across limestone, singletrack and ridgelines, with cupless aid stations and race packet pickup the day before.

Trail races near Fort Collins offering 25 and 50 mile options on mostly singletrack through Lory State Park and Horsetooth Mountain Park, featuring about 5,500 ft or 11,000 ft of vertical gain, staffed aid stations, and marked trails.

Trail races at Mueller State Park from 10k to marathon plus two 12 hour timed events that use colored ball draws to set loop sequences. All courses are single and double track with no pavement and feature an aid station.

A Spartan obstacle race weekend at Fort Carson, Colorado, featuring Sprint, Super, Beast and Ultra distances plus kids races on high-elevation, rugged trails.

A multi-distance running festival in Eaton, Colorado on June 5–6, 2027 offering races from 7K to 100 miles, relay and virtual options on a 2 mile groomed dirt loop with aid stations, camping and glamping.

Trail races at Granby Ranch Resort in Colorado on June 12, 2027, across multiple distances including a 14-hour Elevation Challenge scored by total elevation climbed. The event uses mountain single-track, aid stations, drop bags, and has a 2..

A three day dirt festival in Alma, Colorado at 10,600 feet featuring mountain bike races, trail running, an off road duathlon, free kids races, and weekend camping in an alpine meadow.

A trail event near Parker Colorado featuring a 10k with a stepped incline, a kids one mile on the same start, age and gender based staggered starts, aid stations on the loop, and volunteer entry options.

Trail races of 10 mile, 5 mile and 5K at Lory State Park with foothill views, aid stations using biodegradable cups, and post-race food, drink and awards.

High altitude trail races in Como and Grant, Colorado on July 9 and 10 2027, offering multiple distances including a point to point 100k and a 100 mile with qualifying rules.