Trail Running calendar near Estes Park 2026-2027

Experience a fast and flat 12k trail race through the scenic Valley Trails of Lory State Park. Enjoy a low key atmosphere followed by pizza, beverages, and a vintage race shirt in Bellvue.

Rock Hawk Trail Races in Philip S. Miller Park, Castle Rock, CO offers 50K, 25K, 10K and 5K on rolling ridgeline trails with cup free aid stations, live split tracking, and official chip timing.

A mountain trail race in Steamboat Springs on August 29, 2026 offering 50k, 16 mile and 5 mile courses from Torian Plum Lawn. The event is cupless, donates proceeds to trail maintenance, and includes aid stations on the longer distances.

A community trail event at the Arapahoe County Fairgrounds on 08/29/2026 with a 5K run, a family 5K walk that allows leashed dogs, and a kids 1 mile plus demonstrations, vendors, and a pancake breakfast.

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 ultrarun in Loveland, Colorado with timed events up to 100 hours and distance races to 200 miles on a 2 mile mostly trail loop, continuous aid at the start and finish, and on site camping with park rules.

A mountain trail race at Arapahoe Basin on September 5, 2026 covering 9.4 miles and 2,211 ft of vertical. The marked course uses established trails in White River National Forest and finishes in Mountain Goat Plaza with live music and food.

Join the community for a 5K run or walk on a brand new dirt course at the North Arvada Middle School Athletic Complex. Support local high school racers before taking on this off road route yourself.

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.

Experience a high altitude trail run starting at 10,000 feet on Rabbit Ears Pass. Runners navigate a mix of forest roads and single track trails with 1,200 feet of elevation change through scenic Colorado terrain.

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 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.

Run Rabbit Run in Steamboat Springs, Colorado is an annual trail ultramarathon offering 100 mile (Hares and Tortoises) and 50 mile divisions, limited-field races with a six-figure prize purse and a history of charitable giving.

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.

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.