This hiking trail has only one trailhead, so you're looking at an in and out backcountry trek. Different parts of High Sierra Trail are at very different elevations which of course means you need to be prepared for different conditions on different parts of the backpacking and hiking trail. Sometimes this great outdoors hiking trail gets really dry, so donít forget to check for any current fire restrictions before you go. High Sierra Trail is quite long, so make sure you bring plenty of supplies. Of course, this is an overnight backcountry hike, 11.5 days normally, so better have big a backpack to fit all the stuff you need. Being 76.8 miles long; it's considered a longer backcountry walk. This hiking trail has a total elevation difference of 5,185 feet which is higher than average.