From the intersection of route 4 and route 108 head south into Durham. When you get to the center turn right on Madbury Road. Go about a mile and a half and turn right on Route 155. In a few hundred yards you will see the entrance to Kingman Farm on your left. Go another 100 yards and park in the small dirt lot on your left. Alternatively you can turn left when you get to Route 155 and then take your first right on Town Hall Road. Just after the Library you'll see the Town Hall and there's a trailhead behind it.