Trail Running calendar near Aurora 2026-2027

The Sourdough Snowshoe Race in Nederland, CO is a donation based backcountry event offering 18K and 30K routes where snowshoes are required. Enjoy rugged alpine scenery with a warming tent and hot drinks at the finish.

An 8K T&H race on February 1, 2026 at Edora Park in Fort Collins for Fort Collins Running Club members only; a bib is required and volunteers are welcome.

Join the Super Sunday 5K on February 8, 2026 in Littleton for a scenic run along the Mary Carter Greenway. Celebrate at a post race party at Breckenridge Brewery Farmhouse with 20% off food and drinks and community fun.

A two-person partner race on Virginia Canyon road in Idaho Springs, CO, held on Valentine’s Day. Runners each complete a roughly 12-mile out-and-back; team time is the sum of both individual times and multiple awards are offered.

Stories Trail Runs is a two day winter trail event at Cheyenne Mountain State Park with timed 6 hour and 15 hour formats plus 10k, half marathon and 20 mile races. Courses use multiple distinct loops and a central aid area at start and fini..

Race The Ranch is a snowshoe race at Snow Mountain Ranch near Granby, Colorado on April 4, 2026, offering 5k, 25k and 50k looped courses over scenic groomed and singletrack snow trails. Finishers receive a custom beanie and engraved Miir ca..

A multi distance trail event at Sylvan Dale Guest Ranch in Loveland CO on April 10–11 2026, featuring 5K and 10K runs plus 4 hr, 6 hr and 12 hr timed races and relay and virtual options. Camp and on site aid station available.

Mountain Ridge Trail Race in Highlands Ranch, CO features 21 mile, half marathon, 10 km and 5 km courses on mostly dirt single track with rolling hills and front range views. The event uses cupless aid stations and finishes at Mountain Ridg..

Take on the scenic Poudre River Trail April 11 and 12 2026 in Northern Colorado with 50 and 100 mile solo and relay options. Stocked aid stations, finisher swag, belt buckles for solos and a lively post race party await.

The Rattler Trail Race will take place in East Colorado Springs on Saturday 18 April 2026. You can run between 5 and 50 kilometers.

On May 2, 2026 Greenland Trail Races in Larkspur, Colorado offer 4 Mile, 8 Mile, 25K and 50K trail options on dirt trails with aid stations, chip timing, a virtual option, and awards by overall and age group.

Niwot's Challenge is a by invitation only endurance event near Sedalia, Colorado that prizes off trail navigation and self reliance over racing. Limited to 40 entrants, it offers routes up to 100 miles for experienced wilderness runners.

Take 5 in the Garden is a road and trail running event in Garden of the Gods, Colorado Springs, offering multiple distances including a 9.5 mile option. The course runs traffic-free past iconic red rock formations with Pikes Peak in view.

Valkyrie Trail Race in Cheyenne Mountain State Park near Colorado Springs offers women's trail races from 4 miles to 50K on limestone meadows, singletrack and rocky pine trails. The event is scheduled for Saturday May 9 2026.

Trail races on scenic, well marked singletrack around Fort Collins. Choose a 25 mile loop with about 5,500 feet of gain or run a second loop for 50 miles and roughly 11,000 feet of ascent, with staffed aid stations and enforced cut-offs.

Ram Party Trail Runs in Colorado Springs offers five trail distances from 15K to 55 miles around Rampart Reservoir with point to point and out and back course options, aid stations, drop bags, limited parking and shuttle service for the 60K..

Trail trail race at the YMCA of the Rockies in Estes Park offering 10k, 27k and 55k looped routes. The course is mostly single track with a steep ascent at Bible Point and includes a day pass, a custom hat and wool finisher socks.

Two trail ultras in Buffalo Creek Colorado on May 30, 2026 covering singletrack through pine forest and burn areas. The event offers 50 Mile and 50K options, staffed aid stations, course markings, and a post race festival with awards.

Hit alpine single track at Granby Ranch in Granby, Colorado on June 6, 2026 with options from 6 Mile to 50k and a unique Elevation Challenge. Expect rugged scenery, well stocked aid stations, and a lively resort finish.

A weekend trail running festival in Mueller State Park offering 100 mile, 100k, 50k and 25k looped races on smooth single and double track. The event includes night running options, crew access at aid stations, shuttled parking for shorter..