Trail Running Calendar United States 2026-2027

Lean Horse Ultra is a multi-distance trail running event on the George S. Mickelson Trail in the Black Hills, held July 31 to August 1, 2026, with 100 mile, relay, 50, 30, and 20 mile options and a CrossFit edition.

Experience an epic 200 mile point to point team relay from Fort Collins to Steamboat Springs. Run through the heart of the Rocky Mountains and over two scenic mountain passes in this ultimate Colorado road race.

Join the SoCal Summer evening 6K or 12K at Lower Arroyo Park in Pasadena on July 31 2026 and celebrate after with tacos and drinks. Scenic park routes and friendly vibes make this a perfect summer night run.

Experience the beauty of Bogus Basin at the Boise Front Trail Festival. Choose between a steep hill climb or scenic trail races while supporting local trail conservation in the Boise Foothills.

A night trail event at Land Heritage Institute on August 1, 2026 offering 5K, 17K, 35K, 50K and a 17K ruck option; headlamps and minimum water carry are required and aid stations provide food and hydration.

A trail event at Phipps Park west of Billings with 2, 4, 6, and 8 mile courses plus a virtual option, one aid station, no-paper-cup policy, awards, a $600 cash giveaway, and donations to local trail maintenance.

Run S'more 4-Miler is a July 31, 2026 running event on the Iron Horse Trail in Alliance, Ohio, featuring a 4-mile out and back course with both in person and virtual options; the race starts and finishes at First Christian Church.

Tough Mudder Indiana on August 1, 2026 at CERAland Park in Columbus offers 15K and 5K obstacle courses across woodland and farmland, spectator Mudder Village, group packages, and volunteer options.

Experience an obstacle course race at the Tryon International Equestrian Center featuring horse trails and red clay hills. Choose from 5K and 10K distances or children’s races in a world class sporting venue.

Waldo 100K is a 100K loop ultramarathon near Oakridge, Oregon that starts at Willamette Pass Ski Area and climbs multiple mountains over remote single track trails with views of Waldo Lake. The event participates in a Trail to Zero carbon o..

Experience high elevation trail running in the mountains of Fairplay Colorado. This event offers three distances ranging from a half marathon on forest roads to technical ultramarathons through remote wilderness terrain.

A 100-mile mountain trail race on Mt. Hood with a crew-accessible lollipop-loop course and 17,300 ft of ascent and descent, staged at Mt. Hood Meadows on August 1-2, 2026. Capped at 250, it is a Western States qualifier and requires a servi..

Test your endurance at Cooper River Park on a fast and flat 3.75 mile paved loop. Choose from 12 hour, 24 hour, or 100 mile challenges with great views of Philly and full aid station support.

Volcanic 50 near Mt St Helens on August 1 and 2, 2026 offers a rugged 50K and a 25K over single track through lava, pumice and forest. The 50K has about 7,400 ft of elevation change and requires a prior trail 50K result.

A non-profit 15-mile trail race on August 1, 2026 near Hesperus, Colorado, climbing 3,100 ft to 12,200 ft at Kennebec Pass with views of the Animas and Dolores valleys. Proceeds benefit La Plata County Search & Rescue.

A multi-distance trail event on Blue Hill Mountain near the Maine coast offering 5k, 10k, 25k and 50k routes with summit trails, aid stations and revenue donated to local conservation and Wabanaki organizations.

Experience the diverse single track trails of Valparaiso at the Oakadoke Trail Runs. Choose between 4, 9, or 18 mile courses featuring scenic creek crossings and winding switchbacks followed by a celebratory post race meal.

A mountain trail event in Aspen on August 1, 2026 offering 50K, marathon and heavy half-marathon mostly on dirt trails with significant elevation gain; limited on-course support and a finish festival at Rio Grande Park.

A night trail race at Cedar Hill State Park with approximate distances 5K, 10K, 18K, 36K and 54K on the DORBA trail system. Hydration devices are required, aid station coverage varies, and illumination is needed after dark.

Mountain trail races in the Tushar Mountains near Beaver, Utah on August 1, 2026. Distances range from a half marathon to 100K and are staged from Eagle Point Resort above 10,000 feet.