This is a one trailhead wilderness hiking trail, so you're looking at an in and out trek. Even though this is not a very long great outdoors trail it's always splendid to bring some emergency supplies, you never know what could happen. Dorsey Spring Trail is 3 miles long it's a short hiking and backpacking trail. You spend the whole backcountry trek in roughly the same elevation zone, so you won’t have to worry about different climate zones along your backcountry trek. This hike shouldn't take more than 2.5 hours, but of course some folks walk a bit slower and some a bit faster. This great outdoors trail sometimes gets very dry, so make sure you check current conditions and fire restrictions with local forest authorities before you head out. This wilderness hiking trail has a total elevation difference of 689 feet which is a lower than average number.