The total elevation difference for this backpacking trail is 1,408 feet which is about average. Keep in mind that this is a long trail, so make sure you bring plenty of supplies. Kawailoa Trail is 8.8 miles long it's an average length wilderness hiking trail. Kawailoa Trail stays roughly within the same elevation zone the whole time, so you get pretty much the same conditions along the whole wilderness hiking trail. This backcountry hike shouldn't take more than 8 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. There is only one trailhead, so you're looking at an in and out backcountry walk.