Trail Running Calendar United States 2026-2027

A Backyard Ultra in Williamson WV on May 22, 2026 using a measured 4.1667 mile out-and-back loop. Runners repeat hourly loops until one runner completes an extra lap; one aid station, camp space, live timing and video are provided.

Experience an evening run through the historic Manassas National Battlefield with the Night Raider 5k and 10k. Finish your race at The Winery at Bull Run and enjoy a post-race gathering at this scenic Virginia vineyard.

A free, community 5K run/walk on the Bath Cross Country Course, honoring teacher Judy House. The event kicks off summer and raises funds for a memorial scholarship benefiting local students.

A self paced summer challenge in Central Oregon from May 22 to October 1, 2026. Hike nine buttes or try a single Micro Butte and redeem a free pint at each sponsoring brewery while tracking progress with summit submissions.

Experience a unique 50K event featuring ten consecutive 5K runs starting every hour on a natural surface course. Bring your own supplies and enjoy a social atmosphere with fellow runners during the scheduled breaks between laps.

A multi-distance ultrarun at a private ranch in Riverside on May 23 to 24, 2026, offering 3, 6, 12, 24 hour, 24 hour relay and 100 mile options. Flat 1 mile dirt and grass loop with free camping and on course support.

Tough Mudder Philly on May 23, 2026 at Plantation Field near Coatesville, PA offers 5K and 15K obstacle courses, an Infinity multi lap format, a Mudder Village spectator area, and finisher medals, shirts, headbands, and a finisher drink.

A multi-distance trail event at Calvin Crest in Fremont, Nebraska over two days in late May 2026, featuring looped single-track courses on the Platte River bluffs and options from a half marathon to a 100-mile race and a 13-hour challenge.

A trail running weekend in Leavenworth, WA on May 23, 2026 featuring a 55K double-loop, a 27K Skyline race in the Vert Running Series, and a family-friendly 5K, plus festival activities, food, and community awards.

Flat out-and-back rail-trail races near Belleville, WI on May 23, 2026 offering 50 miles, 50K, and a half marathon, with aid stations, event swag, free food and drinks, and a tunnel and trestle-bridge scenery.

Test your grit at Byron Motosports Park with tactical obstacle courses ranging from 5K to 10K endurance laps. Choose from elite vest challenges, weighted rucking, or open waves designed to honor the resilience of first responders.

Honor fallen service members at this patriotic trail event in Black Canyon City featuring 5K and 10K options. Run or ruck the scenic out and back course while proudly carrying the American flag.

Participate in a USATF certified 5k or 1 mile fun run in Fort Gibson during Memorial Day weekend. Support the installation of permanent flags while running through a scenic course honoring past and current service members.

Event Overview Austin's Backyard Marathon & Memorial Day Remembrance Run is an endurance running event held in Marble Falls, Texas, in the Texas Hill Country. The event features a multi-race format: the Austin's Backyard Ultra, the Memo..

A night-oriented loop race at Cline Buttes offering 3/6/12-hour events, a Last Person Standing format, and a 5k on a 3-mile loop with a steep 0.5-mile climb; cupless aid, volunteer credits, youth discounts, and Indigenous free entries.

Enjoy a donation based trail run through the scenic Ouachita National Forest with 20 mile and 12 mile options. Finish your day with a community cookout and season celebration at the Lake Sylvia Day Use Area.

Experience scenic single track trails along the San Gabriel River in Georgetown, Texas. This event features multiple running distances from 1 mile to 50k, plus cross country mountain bike races in a historic downtown setting.

Trail races in Portland’s Forest Park over the Memorial Day weekend, featuring a 50K with nearly 4,000 feet of climb and a hilly half marathon; proceeds benefit the Forest Park Conservancy and finishers receive a pint glass and postrace foo..

West Virginia Trail Fest is a family friendly trail running festival each May around Snowshoe in Pocahontas County, with scenic forest and single track races for all ages. Enjoy kids activities, a historic train ride and community fun.

A trail and road event in Joseph, Oregon offering a Half Marathon, 5 Mile, 5K and a free 1 Mile kids run, with varied surfaces, aid stations, finisher medals, and fundraising support for the Wallowa Land Trust.