Kalapana Trail is a one trailhead backcountry hiking trail, so you're looking at an in and out backcountry hike. The total elevation difference for this backcountry hiking trail is 2,831 feet which is higher than average. This is a long wilderness trail, so make sure you bring plenty of supplies. Different parts of this wilderness hiking trail are at very different elevations, so keep in mind that you may need to dress differently at different elevations. With its 16.8 miles of walking distance; it's a long wilderness hiking trail. Of course, this is an overnight backcountry hike, 2.5 days normally, so it's a perfect thing if your backpack is big enough to do the job.