Trail Running calendar near Alma 2026-2027

A trail race on the Frisco Peninsula offering 5k, 10k and half marathon courses with lakeshore finishes, chip timing, stocked aid stations, post-race food and beer, and marked single track and dirt trails.

Run along Boulder Reservoir on flat, mostly dirt trail courses with sweeping Rocky Mountain views. Choose from 10K, 3 4 marathon, half, full marathon or relay, with USATF certified courses, a shirt and a finisher medal.

Roxborough Ultras The Roxborough Ultras is a late-summer trail ultramarathon held in Roxborough State Park in Colorado. The event offers two distances: a 50K and a 50 mile race. The courses are fully marked and follow trails exclusively. Bo..

Trail races at Cheyenne Mountain State Park feature 5K, 10K and a 25K summit course with about 3,450 feet of elevation gain; the 25K is a Pikes Peak Ascent qualifier and the event raises funds for park trail projects.

The Leadville Trail 10K Run takes place in August 2026. This out-and-back 10k course shares the start and finish of the famous Leadville Trail 100 Run, traveling on paved and dirt roads high in the Colorado mountains. It features one aid st..

A 99.7 mile out and back ultramarathon in Leadville, Colorado, with 11 aid stations, high altitude passes near 12,526 feet, and belt buckle cutoffs at 25 and 30 hours.

Trail races in Fraser, Colorado on August 22, 2026, offering a Half Marathon and a 5K on unpaved roads and trails. Proceeds support the Shining Stars Foundation and dogs are allowed on leash.

Explore the historic and scenic singletrack trails of Colorado's Staunton State Park. Choose between a full marathon or a half marathon on a high-altitude course with generous time cut-offs. The event includes well-stocked aid stations and..

A trail half marathon and a mostly downhill 5.6K through Arrowhead, Bachelor Gulch and Beaver Creek. The half covers 13.3 miles with about 2,844 feet of ascent, aid stations on course, postrace food, t shirts and age group awards.

Trail races on the Miller Park and Ridgeline trails in Castle Rock offering 50K, 25K, 10K and 5K with aid stations, drop bag support, chip timing and live split tracking; proceeds support local open space and trail efforts.

A family-focused trail event at Arapahoe County Fairgrounds on August 29, 2026, featuring a 5K run, a family 5K walk and a kids 1 mile run. The day includes dog demonstrations, a costume contest, auctions, vendors and a pancake breakfast.

A 40 mile point to point mountain ultramarathon from Crested Butte to Aspen across the Elk Mountains, the Grand Traverse follows the backcountry ski route and raises funds for Crested Butte Nordic while providing mandatory backcountry gear..

A mountain trail race at Arapahoe Basin on September 5, 2026 covering *9.4 miles* and *2,211 ft* of ascent, with Sport, Expert and Pro divisions, a 700 runner cap, on course aid stations and category prizes.

Ned Ned Run in Nederland Colorado features a trail Half Marathon, a 10K on dirt roads and single track, and a 5K out and back near Old Town. The event is family friendly, allows leashed dogs in the 5K, and encourages costumes.

Snow Mountain Ranch in Granby Colorado features trail races from 5K to 50KM across dirt trails with varied elevation and mountain views. Loop courses include aid stations, drop bag access, onsite lodging, and a pacer option for the 50KM fin..

Point-to-point trail race in Empire, Colorado with 50K and 22K options, both on dirt single-track and reaching above 13,000 feet. Prior ultra experience is required for the 50K and cut-off times are enforced.

This women's trail running event in Buena Vista, Colorado offers a half marathon and a 10k through scenic Rocky Mountain terrain. The course winds through sagebrush and pines with views of the Collegiate Peaks. It fosters a supportive commu..

A historic mountain marathon from Manitou Springs to the Pikes Peak summit and back, plus a summit-only Ascent option. Both races use the Barr Trail and involve high elevation and sustained uphill running.

The Break of Dawn North Table Trail Race features 10-mile and 5-mile courses on the trails of North Table Mountain in Golden. The event supports BeyondHome's mission. Packet pickup is available in the days before the race.

Test yourself on the iconic Pikes Peak Ascent, a 13.3 mile run from Manitou Springs to the summit with breathtaking views and huge elevation gain. A bucket list challenge for runners who crave high altitude adventure.