Northeast of Concord near New Durham in Strafford County, the New Durham Trails (aka Devils Den Trails) near Lake Winnipesaukee have 25 miles of off-road motorcycle trails. These trails are on private land and are maintained by the New Durham Valley ATV Club.
To reach the trailhead from the intersection of SR 11 and SR 28 north of New Durham, head north on SR 28. Travel 7.4 miles to a right on Rines Rd. Go 1.2 miles to a right on Hays Road. Go 0.6 miles to a left. Travel to the end of the road and the beginning of the trails.
Overall, New Durham Trails is the 4th most popular dirt bike trail of all 18 dirt biking rides in New Hampshire.