This great outdoors trail has only one trailhead, so you'll be hiking it in and back out. The total elevation difference for this great outdoors trail is 1,519 feet which is about average. This vicinity 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. You should count on this hike taking about 5.5 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. Gnarl Ridge Trail is quite long, so do pack enough food to last the whole trip. Being 6.4 miles long it's a mid length backcountry walk. Some parts of Gnarl Ridge Trail are much higher up than other parts of the backpacking trail which of course means you need to be prepared for different conditions on different parts of the backpacking trail.