Trail Running calendar near Sudbury 2026-2027

A 12-hour loop event in Lawrence Woods within the Middlesex Fells Reservation near Medford, MA. The course is an approximately five mile loop with a minimal aid station; participants commonly set up personal spots near the start and aid are..

A one-mile out-and-back on the Farmington Canal Heritage Trail in East Granby, offered in two waves and hand timed, on crushed gravel. Limited parking and a $25 registration fee; all proceeds benefit charities.

A 5.5 mile trail race at Soapstone Mountain with six ascents and about 1500 feet of climb. The field is capped at 50 runners for parking reasons and online registration is required.

A roughly 3.8 mile trail race at Kingman Farm in Madbury, NH on July 26, 2026, featuring rolling nordic style paths and switchback singletrack; proceeds support the Doug Flutie Jr. Foundation for Autism and day of registration is available.

A trail run in Bedford, New Hampshire on July 30, 2026 offering separate 5 km categories for adults, youth, and kids. Online registration is available and participants can add donations or purchase merchandise to support the Rotary Club of..

A 5K mud run on August 1, 2026 at 508 INTL- Adventure Sports Center in Boston, featuring obstacles, mud pits and slides, plus Pre-Party and After-Party with music, food and beer. Kids are welcome and light quick-dry gear is recommended.

A community cross country meet at Stonington High School offering a 5K and a children's 1/2 mile. The course mixes track, quiet campus streets, trails, grass, and finishes back on the track.

A community fundraising event in Groton, MA featuring a three-person, 8.4 mile relay across cattle trails and Gibbet Hill, youth races and family activities, with barbecue, music, and proceeds supporting local charities.

A seaside set of timed ultra-marathon events at Colt State Park in Bristol, Rhode Island, offering 6 hour, 12 hour, and 24 hour formats with separate entry periods and fees.

TARC Summer Classic at Noon Hill Reservation features a mostly forested 10 mile loop with singletrack, gravel and a scenic vista. The event offers 10 mile, 50K and 40 mile options and includes mandatory trail briefings and finish time limit..

The 15th Annual 5k Race to the Ledges in Concord, NH on August 8, 2026 features a short road and trail course and includes post-race brunch boxes to take away. Registration includes an adult 5 km entry and a free kids 5 km for ages 6 and un..

A community 5K on August 8, 2026 at Pinkerton Academy in Derry, NH featuring a campus-and-trail course; runners and walkers of all ages are welcome and proceeds support the Pinkerton Fund to benefit students.

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 community running event in Tolland, CT featuring a marked 5K trail loop run repeatedly over an eight hour period, potluck food and grill items, raffle tickets awarded per loop, and a 50th anniversary gift for runners who complete at least..

A scenic off-road 5K at White Barn Farm through conservation land with a midway water station and marshaled course. Proceeds support the farm and a donation to the local food pantry.

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.

Experience a scenic trail run through Vineyard Hill Reservation and Bradley Palmer State Park. Choose between 5 km and 10 km distances on a rolling course featuring wide trails and the open landscapes of Shaw Field.

A trail ultramarathon at Prospect Acres Ranch where runners complete repeated 2.2 mile laps in 2, 4, or 8 hour formats. Field camping is available Friday evening and registration is $40 with proceeds supporting future events.

A 5K cross-country race at Waters Farm in Sutton, MA, marking the fourth running of the Old Goat Track Club XC Classic with on-site parking, finish-line water and fruit, portable toilets, and awards for individual and team results.

Ocean State Ultra in West Greenwich, Rhode Island (August 29–30, 2026) offers a 100 mile race with a 34 hour limit plus 12 and 6 hour loop events; registration runs March 30 to August 17, 2026.