Trail Running Calendar United States 2026-2027

Trail races in Groton, Massachusetts on October 4, 2026, organized by local running and trails groups. Two distances, 9.5 miles and 3.4 miles, total entries limited to 250, online registration closes October 3.

Experience a classic cross country race on the trails of North Park during the autumn foliage season. Enjoy 20k, 10k, and 5k distances featuring handmade bamboo medals and traditional folk dancing.

A multi-distance running event at Northeast Lakeview College featuring chip timed 5K, quarter and half marathon options, a kids dash, a virtual run, a judged Day of the Dead costume contest, aid stations, and a post-race rally with music an..

Run through 300 acres of scenic vineyards on a flat trail course in Peconic. Enjoy live music, food trucks, and a post-race glass of wine at this chip-timed autumn event.

Run by the Sea at Wilder Ranch State Park on October 4, 2026 offers a Half Marathon, 12K and 4K run/walk along mostly flat packed dirt trails with coastal bluff and Monterey Bay views. Organized by the Santa Cruz Track Club; proceeds benefi..

Trail races at Catalina State Park on 10/04/2026, including a 9.3-mile out-and-back on Nature, Bridal and 50-Year Trails and a 5k on Nature and Bridal; registration, amenities, medals and shirt details are provided.

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 across city and county parks with increasing distances, chip timed scoring, and series awards for runners who complete all four events.

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.

Trail races in Bald Eagle State Forest offering a 13.6 mile half marathon and a 6.4 mile 10K over technical singletrack, steep climbs, stream crossings, and scenic overlooks.