Trail Running calendar near Cheyenne 2026-2027

Repeating 2 km out and back laps on the Thumb Open Space trail in Estes Park. Participants collect a poker chip at each turnaround and the most chips wins during a sunup to sundown timeframe; 35 spots and a $100 entry fee.

An overnight team relay covering 200 miles and 36 legs from Fort Collins to Steamboat Springs, crossing two mountain passes. Multiple team categories are offered and teams choose between supplying volunteers or donating to Windsor Gives.

Four midweek trail races in August at Lory State Park near Fort Collins, offering 5k to 12k courses, chip timing, series points, post-race pizza and vintage shirts, with awards for top series finishers.

A hilly 10 km trail race at Lory State Park's Eltuck Picnic Area with 1,700 feet of elevation gain and a 100-runner cap. The event includes pre-attached timing chips, no on-course aid, and post-race pizza and beverages.

A four‑race midweek trail series at Lory State Park in August 2026 offering 5k, 10k and 12k courses with varied elevation. Series and per-race registration, post-race food and drinks, and end-of-series awards for top points scorers.

Run the scenic Medicine Bow Rail Trail and Lake Owen at high elevation in Wyoming's national forest. This event offers both marathon and half marathon distances, all on a historic pathway. The 2026 edition is scheduled for August 15.

A hilly trail 5k at Lory State Park Eltuck Picnic Area in August 2026, capped at 100 runners and timed by chip. Post-race pizza and beverages are provided and the race is part of an August series of trail events.

A four‑race midweek trail series at Lory State Park in August 2026 offering 5k, 10k and 12k courses with varied elevation. Series and per-race registration, post-race food and drinks, and end-of-series awards for top points scorers.

Trail races at Curt Gowdy State Park near Cheyenne, Wyoming, across granite boulders, pine forests and open meadows. Distances include a 4 mile and an 8 mile, with a half marathon planned for 2027; the event is cupless with aid stations.

A fast, flat 12 km trail race on the Valley Trail at Lory State Park, part of a four-race August series. Entrants are capped and timed with chips; vintage race shirts and post-race food and beverages are provided.

Run Like the Wind in Allenspark on August 29, 2026 features a 5K race, a 2K run/walk and a dog jog option. Proceeds benefit The Old Gallery and participating dogs are entered in an amateur dog show.

Multi day ultra event in Loveland, CO with timed and distance races from 12 hours to 200 miles on a two mile loop that is mostly dirt trail. Camping is allowed in a designated area at Centennial Park.

A multi-distance running event in Longmont, Colorado on September 11-12, 2026, held on a 1.05-mile loop to commemorate 9/11. Races include a 100-mile option with a 30-hour cutoff, on-site aid, finisher awards, and virtual participant option..

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.

A 10 mile out and back mountain run near Jelm, WY, climbing over 2000 feet to about 9600 ft. The course follows improved jeep roads, features two aid stations, and donates proceeds to Albany County Sheriff’s Search and Rescue.

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.

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.

The Great Bison Shuffle Half Marathon will take place in South Greeley on Saturday 26 September 2026. You can run between 5 and 13 miles.

A 5K ranch run from the Wyoming Pure building across pavement, gravel and two-track pasture roads with cattle, horses and views of Laramie Peak; proceeds support the Marge Cares Foundation and Wheatland Cross Country Team.

Trail marathon and half near Fort Collins along redstone singletrack and technical rock sections, with stocked aid stations, drop bag options, and caps of 400 entries per distance.