Merrimack
Trail Running Calendar near Merrimack 2026-2027
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
Trail Animals Running Club stages a multi-distance trail event at Great Brook Farm State Park, from a free 0.5 mile youth run up to 50 miles, on marked looped courses.
Veterans Count Nashua 5K in Nashua, NH on September 5, 2026 is a community 5K with free T shirts for registrations by July 20 and free kids entries.
Trail ultramarathon and half marathon at Bear Brook State Park with GPX navigation, minimal markings, no cup aid stations, and variable ultramarathon distance.
Thunder Run is a 5K trail race with more than 20 obstacles through woods and hills in Candia, New Hampshire on September 12, 2026. Organized by Raymond Area Rotary, 100% of proceeds support local and selected international projects.
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.
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 multisport festival at Pawtuckaway State Park on 09/26/2026 with swim, trail bike and run options, presented for womxn 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.
October 2026
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.
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 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..