Trail Running Calendar United States 2026-2027

FORGE is a 12 hour backyard ultra near Swinomish Casino in Skagit County, WA. Runners complete a 4.167 mile loop each hour; finish all 12 loops for 50 miles. Awards include trophies and a $500 prize for fastest cumulative time.

A three-race trail series in Park City from June 6 to August 1, 2026, featuring 5K, 10K and a half marathon. Entrants may choose individual races or the full series and a group discount is available for four or more.

A trail event near Beulah, Colorado offering 50-mile and ~101-mile options across the Wet Mountains, with large elevation range and distinct east- and west-side ecosystems.

Dirty Half is a 13.1 mile trail half marathon near Bend, Oregon on June 6, 2026, with finisher prizes, awards by division, post race food and beer, and technical long sleeve shirts whose proceeds support the Deschutes Land Trust.

Experience a trail race along the largest inland beach in Ohio at Alum Creek State Park. Choose from distances ranging from 5K to a half marathon or join a relay team to run through scenic shale cliffs.

A community 5K on June 6, 2026 in Joliet along the Rock Run Greenway Trail with start and finish at Cemeno's Pizza. Proceeds benefit the Pat Clark Cancer Foundation to support local cancer patients and families.

A chip timed five mile trail race at Asbury Woods in Erie with boardwalks, dirt trails and single track loops, held the same day as a kids fun run and free childcare. Pre registration fees apply and day of registration is available.

Trail races from a Youth Mile to a 50K take place June 6, 2026 at Canyon Park. The event uses a 7.8 mile shaded loop with technical sections, marked aid stations, a cupless policy and chip timing.

A trail running event in Humboldt Redwoods State Park on June 6, 2026. Courses of 30K and 10.5 miles climb Grasshopper Peak and finish among old growth redwoods in Bull Creek Flats.

Trail festival in Naples, NY featuring a single-loop 25K and a shorter 10K across Cumming Nature Center and nearby state lands, with three aid stations and proceeds supporting environmental education.

Experience the longest running night trail series in the country at Pedernales Falls. Choose from distances ranging from a youth mile to 60K and enjoy a unique evening of trail running in the Texas Hill Country.

A five-mile towpath race in Williamsport, MD, held as the 45th annual Gary Brown Memorial event. Entries include standard and student fees, a guaranteed T-shirt deadline, chip timing with instant results, podium awards, and designated parki..

The Kan is a mountain trail race at Mt Spokane State Park with 50k, 25k and 10k routes across alpine meadows and ski trails. Entry includes food and beer and the event offers prize money and other awards.

The City of Fullerton’s inaugural Fullerton Fit 5K Trail Run takes place June 6, 2026 on a dirt course near Brea Dam, accompanied by a Health & Wellness Fair with vendors, demonstrations, and food trucks.

A trail race on Tiger Mountain State Forest near Issaquah with 5k, 12.6k, and a 13.56 mile half marathon routes. Loop courses use forest roads and singletrack with aid stations offering water, electrolyte drink, and snacks.

Inaugural Mightyssippi on June 6, 2026 features a 10-mile, a new 5K, and a two-person 5-mile relay along the Mississippi River in St. Paul, with routes through Hidden Falls Park and a finish at Upper Landing Park.

An adaptive trail event at Russ Nature Reserve offering 1 mile, 2 mile, and 5K options; rolling starts accommodate walkers, runners, and wheelchair participants, with member fee waivers and on-site registration options.

Experience Ohio's largest state park at the Summer Sasquatch trail race. Run through rolling hills and bridle trails with distances ranging from 10 miles to 50K over a scenic weekend in Kimbolton.

A full-day community event at Walt Hundley Playfield on 06/06/2026 featuring obstacle-course waves, a 5K fun run, a 3K walk, and a 1K youth dash, with proceeds supporting Our Lady of Guadalupe Church and an on-site after-party.

Timed six and twelve hour trail run at Ponderosa State Park in McCall, Idaho on June 6, 2026, held as a fundraiser. Looped course with a 4.79 mile loop and a shorter 2.18 mile option during the final two hours.