This great outdoors trail has only one trailhead, so you'll be trekking it in and back out. The total elevation difference for this great outdoors trail is 3,500 feet which is higher than average. Being 19.4 miles long; it's longer than many trails. Keep in mind that this is a long hiking and backpacking trail, so don't forget to pack enough supplies. At parts of the year this region sees very little rain, so donít forget to check for any current fire restrictions before you go. White Mountain Trail goes through some very different elevations, so keep in mind that you may need to dress differently at different elevations. This backcountry hike should take you about 3 days, so make sure you've got all your overnight gear packed.