Trail Running Calendar United States 2026-2027

Big Bear SquaTch South is a trail running event at Harriman State Park on October 18, 2026 offering a technical half marathon and a 10K with steep climbs, marked courses, aid stations, and capped fields.

Trail races in Upper Bidwell Park featuring a 13.1 mile half marathon and a 4 mile hourly endurance challenge with creek crossings, single track trails, aid stations, bag check, bike valet, and reusable cup provision.

Trail and road events in Wellsville NY on October 18 2026 feature distances from 2 miles to 25 kilometers plus a virtual Home Edition. Courses include forest trails, steep climbs, aid stations and bus shuttles to trailheads.

A Halloween themed event on Clinton Road in West Milford, NJ offering a 1 mile Zombie Crawl plus 5k and 10k races. The course features zombie volunteers, themed aid stations, and a finish line festival with awards and a costume contest.

A trail running event in October at Hahamongna Watershed Park offering 5K, 10K and a hilly half marathon across mixed single track and fire roads.

A trail event on October 18, 2026 in Letchworth State Park covering about 20.5 miles for both runners and hikers, with two aid stations, elapsed-time cutoffs, a shuttle to the start, participant caps, and post-event food and finisher shirts..

Trail marathon and 12 mile races at Fort Mountain State Park on October 18, 2026, featuring roughly 5,500 feet of climbing across single track, rocky and mixed use trails and a summit stone wall with fall mountain views.

A one-day community trail running festival in Flower Mound, TX on October 18, 2026. Features a casual 5K group run, an expo with vendors and a raffle, food options, local partners, and a city edition T shirt preorder.

A four-race trail series in city and county parks with increasing distances and varied terrain. The races are chip timed and overall awards require completion of all four events.

Experience the scenic singletrack trails of Lake Fairfax Park with 5 mile and 10 mile race options. Enjoy a community atmosphere with post race breakfast and a dedicated program for children.

Two marked trail distances start and finish at Smith Mountain Lake State Park Beach Pavilion. Courses feature lake views, aid stations, GPX files, included park entry, and facilities near the start and finish.

A 5K trail run at Shawnee Lookout Park that follows the Blue Jacket and Little Turtle loops, begins and ends at the Waterhole Meadow Shelter, and serves as the final Dirt Days Trail Series event with series points available.

Trail marathon, half marathon and 10K in Huntsville on October 18 2026 with a cupless policy. Entries include a hooded sweatshirt, finisher medal and post race meal.

A fall event at Richardson Adventure Farm in Spring Grove on October 18, 2026 featuring a 10K, two 5K options including a corn maze route, a 1-mile family adventure, chip timing, and a finisher medal for every participant.

A scenic 5K trail and road run along the Red Cedar River in Williamston on October 18, 2026, with tiered entry fees, a guaranteed t-shirt for early entries, an inaugural finisher medal, and proceeds supporting the St. Louis Center.

Community trail event at Camp Barnes in Frankford, Delaware offering 6.2 and 3.1 mile runs, 1 to 3 mile family walks, and a Kiddie Color Run. Post race lunch and live bluegrass music support Mariners Bethel youth ministries.

Experience a trail run through the rolling hills of Kanawha State Forest with 13.1 mile and 7K options. This event features forest roads and wooded routes as part of the unique Cryptid Race Series.

Explore the scenic trails of 100 Acre Woods in Malta, New York. This community event on October 18, 2026 features 2k, 3k, and 5k trail runs. All proceeds support local trail maintenance.

Experience the wilderness trails of Deerfield Town Park with a variety of trail races for all ages. Enjoy a professionally timed 5K or a community run while supporting the local food pantry in your favorite running costume.

Looped trail races at Glenn Cunningham Lake in Omaha offering 5 mile, 10.5 mile, 21 mile, 50K and a 50 mile option. Two buffet style aid stations support runners and registration for 2026 is open with a 500 runner cap.