With its 24.2 miles of walking distance; it's a long wilderness hiking trail. Of course, this is an overnight walk, 3.5 days normally, so make sure you've got all your overnight gear packed. This area does get very dry sometimes, so do check for current fire restrictions before you go if you plan to bring a stove or make a camp fire. The total elevation difference for Mount Jefferson Trail is 4,379 feet which is higher than average. This is a hiking trail that is quite long, so do pack enough food to last the whole trip. Some parts of this wilderness hiking trail are much higher up than other parts of the wilderness hiking trail, so keep in mind that you may need to dress differently at different elevations. Mount Jefferson Trail is a one trailhead wilderness hiking trail, so you'll be backcountry backpacking it in and back out.