Trail Running Calendar United States 2026-2027

STRS #4 - Tom's Baby on July 29, 2026 takes place at Tom's Baby Trailhead in Breckenridge, CO, offering short and long course entries with adult, youth, and non-binary categories and published entry fees.

Trail races at Brighton Resort on July 29 and August 26 offer two measured routes through alpine trails, lakes, and ridgelines. Short and long courses include single track sections and a final run to the Great Western lift.

Three day 75 mile stage race around Lake Sunapee with about 15,500 ft of elevation and technical trails, plus a 50K point to point option. Includes overnight camping, limited aid stations and $35,000 in prize money.

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.

Two days of mountain trail racing at Bogus Basin with an uphill Hill Climb, 5 mile and 10 mile races, community fundraising for Ridge to Rivers, and a youth discount through the Youth Trail Initiative.

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.

Obstacle course weekend at Tryon International Equestrian Center on Aug 01 and 02, 2026 featuring Sprint, Super and Kids races plus workshops and spectator options on trails, clay climbs and creek beds.

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..

Sheep Mountain Trail Runs in Fairplay, CO offers 50 mile, 50k and half marathon courses at high elevation with technical trails and forest roads. The event includes stocked aid stations, a finisher medal, drop down options and a 16 hour tim..

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 stages rugged trail races around Mt. St. Helens with a full circumnavigation 50K and a 25K that shares iconic volcanic terrain, steep climbs, boulder fields, river crossings, and substantial elevation change. Both races start and f..

A 15 mile mountain trail run on August 1, 2026 that climbs about 3,100 feet and reaches over 12,000 feet at Kennebec Pass. The course offers alpine terrain and views of the Animas and Dolores River valleys while supporting La Plata County S..

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.

Oakadoke Trail Runs features tree-covered single-track, switchbacks and creek crossings on looped 4, 9 and 18 mile courses near Valparaiso, IN, with frequent aid stations and a cupless race format.