The total elevation difference for this wilderness trail is 1,839 feet which is about average. Keep in mind that this is a long trail, so do pack enough food to last the whole trip. Some parts of Skyline Trail are much higher up than other parts of the hiking and backpacking trail which of course means you need to be prepared for different conditions on different parts of the hiking and backpacking trail. Being 6.2 miles long it's an average length hiking and backpacking trail. The time needed for this trek is roughly 5.5 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. There is only one trailhead, so in and out is the way to hike it normally.