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Trail Running Calendar near Merrimack 2026-2027

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Explore the top trail runs near Merrimack for 2026-2027! We've gathered 28 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

September 2026
Cross-country races at Great Brook Farm State Park in Carlisle MA on 09/13/2026, featuring a 2K youth race and multiple 5K fields as part of the USATF New England Grand Prix.
Run to Fall 5k at Coe Brown Northwood Academy in Northwood NH on September 13 2026 features a 5k cross country race, USATF youth races, a 2.5 mile trail walk and a kids fun run.
A community 5K trail race in Hooksett that runs from Heads Pond trail through wooded conservation land to the Hooksett Public Library. A separate 0.5 mile kids fun run is available and proceeds support local youth programs.
A trail-based 5K run/walk and a 3K walking route at Mine Falls Park supporting Meals on Wheels of Hillsborough County, with a $30 registration and a 2026 event T-shirt for early registrants.
A community 5K in Jaffrey, NH offering a woods trail and a rail trail out and back. Proceeds support the volunteer Jaffrey Firefighters Company and equipment needs of the Jaffrey Fire Department.
An 18 mile out and back trail race from Windblown Ski Area in New Ipswich NH to Watatic Mountain in Ashburnham MA with steep technical terrain and a three hour turnaround cutoff.
A community 5K in Hillsborough, NH on September 20, 2026, organized by the Hillsboro Fire Department. The off-road course may be uneven and strollers are not recommended; registration runs March 25 to September 19 with a $30 fee.
A community run in Westford honoring a teen lost to domestic violence, featuring a 5K and a family fun run to raise funds for survivors.
A single-day multisport festival at Pawtuckaway State Park offering swim, trail bike and run options, open to people who identify as women and benefiting Girls on the Run NH.
Trail-based 5K obstacle course at Wasserman Park with 12 or more beginner to intermediate obstacles, limited to 200 entries and a $40 fee.
Community run at Shedd Park in Lowell offering 5K, 10K trail and a 1 mile kids fun run to support local conservation and education; donations matched dollar for dollar.
Holdenwood Trail Run 10K in Shirley MA is an early-fall charity race through fields, trails, forests and cobblestone bridges benefiting the Ayer-Shirley Education Foundation.
October 2026
Trail races in Groton Town Forest on October 4, 2026 offering 9.5 miles and 3.4 miles with a 250 participant limit and registration deadlines in September and October.
Experience the peak of New England autumn on a journey through the mountains and fields of central Massachusetts. This trail event offers three distances crossing state borders for runners seeking adventure on the Midstate Trail.
Inaugural trail event in Dublin NH with a 5K and a 1 mile kids fun run on October 10, 2026 supporting the Dublin Consolidated School PTO.
A rugged trail race at Pawtuckaway State Park featuring technical terrain, boulders, streams and a rocky climb. It offers a half marathon and a 5 mile option and lists $7500 in prize money for 2026.
A multi format trail event on the Granite Town Rail Trail in Brookline and Milford NH on October 17 and 18 2026, featuring 7.5 mile relays, 15 mile and 30 mile races and a 30 hour ultramarathon. Proceeds support local trail conservation.
A 5K at Benjamin Franklin Academy in Loudon NH on a partly cross country course with hills, church field sections, a $30 registration fee, and free onsite body scans.
A fall trail event in Harvard on October 25, 2026 featuring a 5K through orchard and woods plus a 1 mile kids fun run, with age divisions, awards, shirts, and proceeds benefiting the Harvard Conservation Trust.
November 2026
Hugs From Vets Trail 10Kish in Henniker, New Hampshire on November 1 features a mixed trail and country road course and raises funds for American Legion Post 78. The field is limited to 150 participants and awards are given to overall and age group t..
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