The total elevation difference for this hiking trail is 4,310 feet, and that is higher than average. Hoh River Trail has only one trailhead, so you'll be backcountry backpacking it in and back out. With its 31.2 miles of walking distance; it's considered a longer trek. Now this wilderness trail is pretty long, so make sure you bring plenty of supplies. Now, this is roughly a 4-day walk, so it's a good thing if your backpack is big enough to do the job. Some parts of this backcountry trail are much higher up than other parts of the backcountry trail, so keep in mind that you may need to dress differently at different elevations.