Trail Running calendar near Vail 2025-2026

Suffer Better Fall Trail Runs take place at Staunton State Park, just off Highway 285 near Conifer, Colorado. The event offers four distances: 50K, 25K, a 25K FishSlappers edition, and a new 5K. The course showcases CO’s best trails—lovely,..

Rubey Rescue Run is a 5K uphill trail race held in Aspen, Colorado. The course climbs Buttermilk Mountain, starting near the base at Buttermilk Mountain Lodge and gaining about 1,700 feet to the Cliff House, offering a timed competition and..

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.

Run scenic single track trails near the Denver skyline at the Great Trailhead Foot Race in Bear Creek Lake Park on October 18, 2025. Choose 5 or 10 miles, get a tech tee and post run party, and 10 mile finishers earn a mug.

Run scenic single track around Indian Creek Campground in Sedalia Colorado on October 18 2025, with distances from 5 miles to 50 miles and sweeping red rock and mountain views. Limited field, well stocked aid, race shirt and finisher medal.

Tackle scenic dirt trails at Bear Creek Lake Park with 5 km, 15 km, a 5 plus 15 double, or a kids 1 km. Registration includes socks or a neck gaiter and a pancake breakfast while kids earn a stuffed bear at the finish.

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..

The HRCA Backcountry Wilderness Half Marathon is an annual 13.1-mile trail race held in Highlands Ranch, Colorado, featuring a scenic single-loop course through the Douglas County East/West trail and the Backcountry Wilderness Area. The rac..

Run the Louisville Trail Race on November 15, 2025, amid the Flat Irons with 13.1, 10K or 5K dirt courses on scenic trails. Enjoy post race festivities and bring a reusable cup or purchase one onsite.

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..

Run scenic high country trails at Staunton State Park on Dec 6 with 50K, 16 mile and 8 mile options, plus well stocked aid stations and sweeping mountain views. Park pass is required and limited parking means most use a park and ride shuttl..

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...

Gothic Mountain Tour takes place in Crested Butte, Colorado. It features two ski races: a 23.5-mile competitive course and a 17.85-mile recreational route around Gothic Mountain, finishing on the Crested Butte Nordic trail system at the Mag..

Event overview The 21st Annual Run Through Time takes place on Saturday, March 14, 2026, in Salida, Colorado. The event includes the following distances: Marathon Half marathon 2 Mile run Kids’ 400 meter run The marathon is open to ages 1..

Race The Ranch invites snowshoers to YMCA Snow Mountain Ranch in Granby Colorado on April 4 2026 for multiple distances on scenic trails and lesser known loops. Expect challenging climbs, friendly aid stations and great finisher swag.

Niwot’s Challenge is an invitation only, navigation driven ultra near Sedalia CO that emphasizes self reliance on rugged off trail terrain. Choose roughly 24, 50, or 100 mile routes with massive elevation gain and strict no GPS rules for a..

North Fork 50 : Event details The North Fork 50 Mile/50K is scheduled for Saturday, May 30, 2026, in Buffalo Creek, Colorado. The start and finish are at the Buffalo Creek Clubhouse, 18050 S Buffalo Creek Rd, Buffalo Creek, CO 80470. Distan..

Enjoy alpine single track through meadows and aspen groves at Granby Ranch Resort with distances from 6 Mile to 50k and a unique Elevation Challenge scored by total climb rather than distance. Small field and stocked aid stations make for a..

Race in the Clouds - Alma Dirt Festival 2026 The Race in the Clouds - Alma Dirt Festival is a multi-sport outdoor event held in Alma, Colorado in 2026. The festival base is Alma Cemetery Meadow, at about 10,600 ft elevation and roughly half..