Take Route 3 South to exit 11. Once you exit, turn left at the light and then take your first right onto Back River Road. Proceed for .5 mile down Back River Road, the trail starts just after the first building on the right. You will find yourself at a traffic circle, go half way around and exit on Route 28, the park will be a few hundred feet further on your left. 101 take exit 1, north on rt.28 by-pass, left onto Wellington Rd.
Trailhead is the left.
Partially Paved - Great ride with kids. Sewalls Falls Rd. The trails are on either side of the road immediately on the west side of the Merrimack river. Derry trailhead, go south on SR28 for 1.5 miles. At Windham Depot Road, turn right heading west and follow signs.