Carlton Notch is a 3.3 mile lightly trafficked loop trail located near Berlin, New Hampshire that offers scenic views. The trail is rated as difficult and primarily used for hiking and trail running. 3.3 miles 1394 feet Loop hiking trail running views Expand Map VIEW FULL MAP Sign up now to see this map! Reviews (0)Photos (2)Recordings (1)No one has reviewed this trail yet. Be the first!