Karangahake Old Rail Tunnel Trail is a 1.5 mile out and back trail located near the city of Hauraki. The trail is good for all skill levels and primarily used for hiking and walking. 1.5 miles 95 feet Out & Back kid friendly hiking rails trails walking Expand Map Sign up now to see this map! Reviews (0)Photos (0)Recordings (0)No one has reviewed this trail yet. Be the first!