Trail Running Calendar Massachusetts 2026-2027

A family-friendly three-loop course of about 5 km through Natick Community Organic Farm with mixed trail, field and road surfaces. All participants receive a chicken medal and proceeds support the farm’s education and teen programs.

A 5.6 K trail run and walk at Berry Pond in Harold Parker State Forest on June 14, 2026. Walkers and leashed dogs are welcome; prizes are awarded, all entrants receive a bandana, and hotdogs are provided after the race.

Teams are driven blindfolded several miles to an unknown location, then must navigate back to the start by the shortest route. This free team event uses cross country scoring and prohibits GPS, phones, and running on I 95 or I 495.

A trail half marathon in Lynn Woods Reservation on June 21, 2026, run as three identical loops over forested singletrack and carriage roads. The event emphasizes environmental stewardship and uses a centralized start and finish at the main..

Muddy Princess Boston is a women-focused 5K obstacle mud run at Kimball Farm in Haverhill, MA on June 21, 2026. The event features muddy obstacles, hydration and rinse stations, participant items and a partnership with the National Breast C..

TSR Trail Race is a loop-format trail run on June 21, 2026, in Adams, MA, featuring hand and machine built singletrack with climbs, descents, and a gravel meadow loop; proceeds support Thunderbolt Ski Runners' trail stewardship.

Three summer trail races at West Hill Dam in Uxbridge, MA, with well-marked wooded single and double-track courses, limited fields, age-group prizes, and a portion of fees donated to local food pantries.

A Spartan obstacle weekend at Carter and Stevens Farm in Barre Massachusetts featuring a 5 km Sprint, a 10 km Super, kids races, and an obstacle workshop across mud, woods, and rolling hills.

Notchview Ultra is a multi day running event July 10-13, 2026 in Windsor, MA featuring fixed distance and timed races on a 1.9 mile loop with an aid station, camping logistics, and charity fundraising.

A 12K trail race on the Blue Hills Skyline Trail with about 2,300 feet of climbing, rocky steep terrain, and minimal aid. The route follows Skyline blazes from the Blue Hills Ski Area parking lot and requires participants to carry hydration..

A 12-hour timed trail event in Lawrence Woods, Medford, featuring a roughly 4-mile loop, minimal on-course aid, and parking at a nearby high school lot. The start and aid station are located in the woods about a quarter mile from parking.

Two trail-focused races at Beartown State Forest in Great Barrington, MA: a 5-mile loop around Benedict Pond and a roughly 13.5-mile half with significant climbing and technical terrain. The event is cupless with limited parking and shuttle..

A family-friendly mud run in Boston on August 1, 2026 featuring a **5K** course with obstacles, waist-deep mud pits, a pre-party and an after-party with music and food, plus value and VIP registration options.

A community fundraising day in Groton, MA on August 5, 2026 featuring an 8.4 mile three-person relay, kids single-loop race and Little Lambs mini runs, followed by barbecue and activities, with proceeds to six local charities.

An eight hour track race at Clapp Park in Pittsfield, MA on a certified .355 mile loop with chip timing, bottle drop aid, age group awards, and proceeds benefiting the AYJ Fund. A virtual option may be available.

A trail event at Noon Hill Reservation in Medfield offering a 10 mile loop plus 50K and 40 mile ultra options, mostly singletrack with roots, rocks, and a scenic Noon Hill vista; proceeds benefit The Trustees of Reservations.

A multi day timed trail event on a Winchendon farm using a roughly two mile loop. Runners choose from six hour day or night, 12 hour, 24 hour, or 48 hour formats under the Sturgeon Moon.

A 5K off-road trail run, walk, and hike at White Barn Farm through Wrentham conservation land. The event is part of the Farm to Trail 5K Series and raises funds to support local agriculture and food pantry donations.

A timed 5K at Brimfield Winery on August 15, 2026, run on a mostly grass cross country style course. Registration options include a standard 5K with a postrace wine pour and a volunteer plus run option.

Jug End Loop Ultra on August 22, 2026 at Jug End State Reservation in Egremont, MA features a 4.2 mile loop through woods, fields and an apple orchard. Participants run as many 4.2 mile laps as they choose within six hours and receive award..