Trail Running calendar near Cheyenne 2026-2027

Experience an exclusive trail race at the private Sylvan Dale Guest Ranch in Loveland. Choose from 5K and 10K Friday evening runs or endurance challenges ranging from 4 to 12 hours on Saturday.

Explore Northern Colorado on the Poudre River Trail. This ultra offers 50 and 100-mile options, both for solo runners and relay teams. The unique 100-mile format combines a race day event with a virtual segment.

Backyard Laramie on April 18, 2026 is a free backyard ultra at Pilot Hill Recreational Trailhead where runners repeat 4.17 mile gravel loops hourly until one remains; donations support local trail maintenance.

The Great Western Trail Race, a BOLDERBoulder qualifier in Severance, Colorado, is not scheduled for 2026 but may return. It has featured 5k, 10k, half marathon, and kids run distances. The event supports local community foundations and non..

Experience the rugged beauty of the Rocky Mountain foothills in Fort Collins with a 25 or 50 mile trail race through Lory State Park and Horsetooth Mountain Park featuring significant vertical gain and scenic ridgeline views.

Samson's Revenge is a trail race at the YMCA of the Rockies in Estes Park offering 50k, 25k and 10k options. The course uses a roughly 10 km loop with a prominent Bible Point ascent and two aid stations.

A weekend running festival in Eaton, Colorado offering distances from 7K to 100 miles, relay teams and 36 hour options on a 2 mile groomed dirt loop, with on-site camping, glamping and amenities such as sauna, cold plunge and aid stations.

A historic trail race near Laramie offering a rugged 25K and a new 10K option, scenic summit views, two aid stations, and a cupless format. Proceeds support Pilot Hill Inc.

A multi-distance running festival at Luvin Arms Animal Sanctuary in Erie, CO, featuring looped off-road courses with mountain views, one central aid station, onsite parking, and races from 5k up to 50 miles plus 3hr/6hr/9hr/12hr timed event..

Experience a scenic loop course through the Devil’s Backbone Open Space in Loveland. This manual timed trail run features natural terrain and includes a commemorative hat for all participants.

Experience up to three miles of messy fun at the Colorado National Speedway. Navigate obstacles by crawling wading and sliding through the mud with friends and family during this unique event in Dacono.

Summer Vibes Bike Rally & Run Festival in Lyons Colorado pairs gravel and road bike rallies with trail running, relays, live music, recovery pools and camping for a combined endurance and festival weekend.

Experience the beauty of Lory State Park at this USATF sanctioned trail race featuring 5K, 5 mile, and 10 mile distances. Enjoy scenic foothill views, plant-based post-race pancakes, and unique wooden medals.

A lap-based backyard ultra around Lake Estes in Estes Park, Colorado. Each lap is 4.252 miles on a paved bike trail with 150 feet of gain, repeated hourly until one runner remains; aid, a custom hat, and athlete village space are provided.

An endurance event on the Thumb Open Space trail in Estes Park that runs from sunrise to sunset. Participants repeat a 1 km out and back loop, collect poker chips at each turnaround, and earn milestone pins and awards.

Experience an epic 200 mile point to point team relay from Fort Collins to Steamboat Springs. Run through the heart of the Rocky Mountains and over two scenic mountain passes in this ultimate Colorado road race.

A four-race August trail series at Lory State Park in Fort Collins featuring 5k, 10k and 12k courses with chip timing, series points and end-of-series awards. Post-race pizza and beverages are provided.

Experience a focused trail run through the hills of Lory State Park with 1,700 feet of elevation gain. Enjoy a post-race social with pizza and beer in a scenic outdoor setting limited to 100 participants.

A four-race trail series on Tuesday evenings in August in Lory State Park. Distances include 5K, 10K, and 12K routes with varying elevation. Pizza and drinks follow each race, with series awards at the end.

A marathon and half marathon on August 15, 2026 at Lake Owen in the Medicine Bow National Forest. Routes run on the 21 mile Rail Trail at high elevation and support trail upkeep.