Trail Running Calendar United States 2026-2027

A community event on the Shiawassee River Trail offering a 5k and a 1.5 mile walk, post-event coffee, music and bonfires, participant shirts and mugs, age group awards, and professional timing.

A non competitive winter running series of six loops totaling 66 miles along the Delaware River in NJ and PA from October 2026 to February 2027. Limited to 100 registrants, includes aid stations and a handmade finisher award.

A charity HalloWin event on Oct 17, 2026 at Boettler Park in North Canton featuring a 5K trail run and a 1 Mile Fun Run with costumes, shirts, medals, prizes, and candy stops; net proceeds support local teachers.

A non-profit off road 5K at the Hudson Highlands Nature Center in Cornwall NY on October 17, 2026. The route passes ponds, meadows, grassy paths and wooded trails while supporting nature-based education; children under 18 run free.

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.

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 free community trail running festival in Flower Mound, Texas on October 18, 2026, featuring a casual 5K group run, an expo with local brands and race directors, food vendors, and a raffle with prizes.

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 on low-traffic Huntsville trails, with hooded sweatshirt, finisher medal and post-race meal included. The cupless event has fixed cutoffs and course maps are available on Strava.

A fall event at Richardson Adventure Farm in Spring Grove, IL featuring 5K and 10K courses through the corn maze and farm, a family 1-mile run for children, and a kids 100m dash with ribbons for finishers.

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.