Trail Running calendar near Jackson County 2025-2026

Silent Trails Memorial Race : Laramie, WY The Silent Trails Memorial Race is a memorial running event organized by High Plains Harriers. The race was established in 2002 to honor and celebrate the lives of eight University of Wyoming cross..

Boulder XC Series Meet 1 is a family-friendly cross-country event held at Valmont City Park (South) in Boulder, Colorado (5110 Valmont Rd). The meet offers three distances: 1K for younger runners, 3K for those up to 16, and a 5K open race,..

Rocky's Backyard Ultra near Estes Park has runners loop 4.167 miles each hour until one remains, with Long's Peak views and 500 feet of climb. Expect variable October mountain weather, aid station, cash and buckle prizes.

Event overview The Blue Sky Marathon & Half takes place October 18-19, 2025 on trails between Horsetooth Mountain Park and Devil’s Backbone Open Space in Fort Collins, Colorado. Distances offered: 26.7 miles (3,500 ft elevation gain/lo..

The Colleen De Reuck XC Classic is a cross country running event held annually at Harlow Platts Community Park in Boulder, Colorado. Honoring renowned distance runner Colleen De Reuck, the race promotes health, fitness, and celebrates local..

Colorado 24 Hour Run takes place in Fort Collins, Colorado, at 4927 E. County Road 36. The event offers multiple distance options: 24-hour, 12-hour, and 6-hour races, plus 24-hour, 12-hour, and 6-hour relays.Runners complete laps on a one-m..

Run scenic Front Range trails with views of the Flat Irons at the Louisville Trail Race. Pick a half marathon, 10K, or 5K then enjoy post race festivities, cupless aid stations with reusable cups, and volunteer swag.

Event overview The Thumbs Up Vertical Challenge takes place in Estes Park, CO on December 6, 2025. The event is an ascent-based out-and-back format on the Thumb Open Space trail. At the trail turnaround, runners collect a poker chip and dep..

Event overview The Twin Mountain Trudge takes place on January 10, 2026 in Laramie, WY. This is the 22nd running of the event. Registration opens on October 1, 2025. Two race options are offered. ~10.2 miles ~20.5 miles Course, aid, and r..

USCSA Cross Country Ski Racing Festival, hosted by Colorado Mesa University at Snow Mountain Ranch Nordic Center in Granby, Colorado, on January 24–25, 2026, brings collegiate teams together with junior skiers for a two-day Nordic festival...

Event overview Race The Ranch is a snowshoe race held at the Snow Mountain Ranch YMCA property in Granby, Colorado on April 4, 2026. The event offers three distances: 50k 25k 5k The 50k route uses less-known trails on the property and inc..

Run the Ranch is an annual trail running event held at the scenic Sylvan Dale Guest Ranch in Loveland, Colorado. The race offers a variety of distances including 5K, 10K, and timed trail runs of 4, 6, and 12 hours, with options for solo run..

The Great Western Trail Race, held in Severance, Colorado, offers a variety of running events including a 5K, 10K, half marathon, and a Kids Fun Run. Scheduled for April 18, 2026, this race welcomes participants to enjoy spring racing in a..

Join the Summits Trail Runs at Granby Ranch Resort in Granby, Colorado for scenic single track running through alpine meadows and forests. Choose distances from 6 miles to 50k, or test yourself on the timed Elevation Challenge looped event.

Run the Crazy Legs 10k+ at Devils Backbone Open Space in Loveland, Colorado, a scenic singletrack course with aid stations and lively local support. Limited spots remain and this is the event's final year, so grab your spot now.

Timberview Trail Run is held at Lory State Park in Bellvue, Colorado, just outside Fort Collins. The event offers three distances: 5K, 5 Mile, and 10 Mile (the 10M is a double loop of the 5M). Runners traverse scenic forest trails with view..

Event overview The Never Summer races take place in July 2026 around Gould, Colorado, mostly inside State Forest State Park between the Never Summer Mountains and the Medicine Bow Mountains. Distances offered: 100 km (65.7 miles) 60 km (39..

The Summit 200 is a single, non-repetitive 200‑mile loop around Summit County, Colorado, centered near Frisco. The mostly non-urban route uses single-track trails, forest roads, and some rec paths and pavement, with the lowest altitude abov..

Run the Rockies Trail Race in Frisco, Colorado offers 5k, 10k, and half marathon distances on the scenic Frisco Peninsula trails, with views of Dillon Reservoir and the Ten Mile Range. The start and finish are at the Frisco Nordic Center. T..

Eternal Damnation Backyard Ultra Eternal Damnation Backyard Ultra is a last-man-standing backyard ultra scheduled for April 18, 2026. The event uses a repeating-lap format: each lap is 4.167 miles, and runners must complete each lap within..