The total elevation difference for this wilderness trail is 2,270 feet, and that is about average. Sandy River Trail has only one trailhead, so you'll be backcountry backpacking it in and back out. 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. Being 7 miles long it's a mid length backcountry walk. Now this backcountry hiking trail is pretty long, so do pack enough food to last the whole trip. This backpacking trail goes through some very different elevations which of course means you need to be prepared for different conditions on different parts of the backpacking trail. This backcountry hike shouldn't take more than 6 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that.