Aratiatia Walkway is a 13.5 mile out and back trail located near Kinloch, Waikato Region, New Zealand that features a river. The trail is good for all skill levels and primarily used for hiking, walking, and birding.
Only did the last half or so of this trail into Huka falls, but the trail was nice and well maintained. Fairly easy going through bush alongside the Waikato river. The falls offers up some pretty nice views as well.