Trail Running Calendar United States 2026-2027

Red River Run is a river trail event organized by the Lake Agassiz Pacers, marking its 51st anniversary on September 19, 2026. The course is USTF Certified, includes two races, offers post race snacks and over $1,000 in door prizes.

Experience the trails of Mountwood Park in Waverly West Virginia. Participants can choose between a half marathon or 5K distance through scenic forest terrain with awards for top finishers across multiple age categories.

Runnin' in the Ruff is an annual trail run in Milaca following trails along the Rum River. It features a 2 mile run/walk and a 10k, with free public registration opening this summer.

Experience ten miles of hills and winding trails through the Byron Forest Preserve and Nardi Equine Prairie. This cup free race features cash prizes and a post race celebration with pizza at Hairy Cow Brewing Company.

A loop-based running event at Limestone Park offering 8 hour and 4 hour races on a 1.65 mile course with mixed crushed limestone and asphalt terrain. Scoring is by completed loops and proceeds support local organizations.

Community 5K and walk on the Karst Park Greenway Trail with a free 1-mile kids' fun run, chip timing, awards, t-shirts for early registrants, and proceeds supporting future Ellettsville events.

Experience an obstacle course run featuring a 5k course through woodlands and shallow water at Camp Albemarle. Choose between a timed competitive heat or a flexible untimed race with over 20 strength and agility stations.

Tap into the Trails offers 5K and 10K routes from downtown Cheboygan on pavement and crushed limestone. The event uses local state trails and directs proceeds to support trails in northern Michigan.

A community 5K and 10K on the Keuka Outlet Trail in Penn Yan with start and finish at Cascade Falls. Courses pass Seneca Mills Falls and the 10K reaches the former Fox Mills site; shirts and medals included.

A 5k fundraiser in Telluride on the morning of Saturday, September 19 that supports the Telluride Adaptive Sports Program. The route starts and ends at Elks Park with river trail views and post-race music, beer and yoga.

Trail ultraruns near Cle Elum WA through remote alpine terrain with large elevation gain. Options include 100 miles, 50 miles and 50 km; required safety gear, aid station cutoffs and a trail work or donation requirement apply.

Mud Factor returns to Honda Hills in Thornville, Ohio on September 19, 2026 offering a 5K mud and obstacle run with Kidz Family and adult waves; waivers and photo ID are required and a spectator fee applies.

An untimed trail ascent in West Jefferson with about 5 miles and 1,600 feet of climbing, summit music and refreshments, custom bells for finishers, and a portion of fees donated to the Blue Ridge Conservancy.

A 50 mile single loop and a half marathon through Porcupine Mountains Wilderness State Park on September 19, 2026, featuring remote, technical trails, steep climbs, limited access, and staffed aid stations.

Johnson Branch Legacy Run in Valley View TX features a 15K trail, a 10K ruck march, and a paved 5K as part of the park's 30 year celebration. Park day pass is included in the race entry and packet pickup is at the Nature Center.

A community Pride Run at Coldstream Park on September 19, 2026 featuring a chip timed 5K with awards and a 1 mile fun walk. Proceeds support local LGBTQ+ school programs and related resources.

A fantasy themed 5K walk and run at Magnuson Park with mixed trail surfaces, Villain Zones, and a Heroes Village; costumes encouraged and leashed dogs and strollers welcome.

A timed, mostly flat 2 mile obstacle course at Richland Community College on September 19, 2026, raising funds for the Student Veterans' Resource Center with 20 to 25 obstacles and finisher rewards.

The ATS Rock Your Sole Trail Run will take place in Waite Park on Saturday 19 September 2026.

Trail runs at Long Ranch Park in Carson City on September 19, 2026, with 6K, 12K and 22K options. Aid stations offer water and snacks but runners must bring a bottle; there are no division awards.