Trail Running Calendar United States 2026-2027

Black Forest Ultra is a 100K trail race near North Bend PA with over 13,400 ft of elevation gain. The lollipop course reverses direction each year, entrants must finish within 19 hours, and crews pacers and spectators are not allowed.

Trail races of 5K and 10K on the Williamsport Water Authority trails in South Williamsport, featuring Bluebird and Pocowanache Trails, one aid station at Green Bridge, proceeds to the Think Big Pediatric Cancer Fund.

A 26.4 mile trail marathon on Connecticut’s Nipmuck Trail featuring rocks, roots, mud and wood bridges, with an optional two-person relay and elapsed time cutoffs. Organized by the Shenipsit Striders in Ashford, CT.

Moscow Mountain Madness invites trail lovers to tackle 5 mile, half marathon or 50k courses across technical single track and forest scenery. Tough terrain, aid stations and authentic backcountry vibes make it a memorable mountain run.

An annual flat, scenic marathon and half-marathon on the Greenbrier River Trail in Pocahontas County WV, held October 4, 2026. Proceeds support trail maintenance and local athletic activities.

Keene Family YMCA Fall Foliage Trail Races feature 5K and 10K trail courses starting and finishing at the Keene YMCA, with chip timing, age-group prizes, and proceeds supporting YMCA programs and access.

A Halloween themed 6K trail run and walk in Aspen that welcomes dogs, offers timed results with cash prizes and costume awards, and donates net proceeds to the Friend of the Aspen Animal Shelter.

Experience a unique trail run through 1600 acres of former prison grounds at Laurel Hill Park. Choose between 5.4 or 10 mile distances on scenic singletrack featuring historic guard towers and open meadows.

Trail races on the shores of Fallen Leaf Lake and over Tahoe Mountain in South Lake Tahoe on October 4, 2026. Distances range from a toddler half mile Tadpole Trot to a half marathon, and event proceeds support local charities.

Experience a technical trail event in Highlandville featuring 5k, 10k, and half marathon distances. Participants enjoy a hilly course followed by a post race celebration with local craft beer and walking tacos.

A four-race trail series in Colorado Springs with distances that increase each round and varied terrain from grass fields to rocky single track. Chip timing is used and series awards require finishing all four races.

A 5K at Ernie Howlett Park on the Palos Verdes Peninsula with a shaded horse-trail course, in-person and virtual options, and a fundraising entry where raising $100 covers registration and benefits Strides in Recovery.

Condor 25K Trail Run is a 25K trail race in Corvallis Oregon on October 4 2026 at Peavy Arboretum. Registration includes a Condor shirt, there is no day of registration, and proceeds support local trail projects and rescue services.

A trail event in Bald Eagle State Forest with a hilly half marathon and a 10K through Poe Valley's steep singletrack and stream crossings. Aid stations, themed finisher awards, and a post race soup gathering complete the program.

Baker Lake Classic 25k on Sunday October 4, 2026 is a 25k event organized by NW Endurance Events. Registration closes October 3 and the entry fee is $80 with a race shirt offered for $25.

A 50K trail ultramarathon around Blue Marsh Lake near Reading, PA, featuring single-track, rolling hills, one major climb, seven themed aid stations and a 9-hour time limit. Relay teams of 2-4 may split the course into four legs.

Experience the scenic Nocatee Greenway Trails in Ponte Vedra Beach with race distances including 10 miles, 10K, and 5K. This event features road and trail running alongside a dedicated 5K ruck and virtual race options.

Trail runs at Jefferson Memorial Forest with an 8-mile route and a 5-mile option, cupless hydration, on-course water for the 8 miler, restroom facilities, awards for overall male and female, and a virtual option.

A one-mile charity run at Gunstock Mountain Resort on October 4, 2026, benefiting Big Brothers Big Sisters of New Hampshire & Vermont. Online registration closes October 2; adult and teen entries are $20, children under 12 enter free.

A community 5k and a 54 yard dash on October 4, 2026 in Glendale with an out-and-back course on the Oak Leaf Trail. Registration includes all-day entry to Milwaukee's Original Oktoberfest at Old Heidelberg Park.