Coast Trail has only one trailhead, so you'll be backcountry trekking it in and back out. Coast Trail is 19.6 miles long; it's considered a longer backcountry walk. This backpacking and hiking trail sometimes gets very dry, so do check for current fire restrictions before you go if you plan to bring a stove or make a camp fire. Coast Trail stays roughly within the same elevation zone the whole time which means the conditions are about the same from start to finish. This is a long backpacking and hiking trail, so don't forget to pack enough supplies. The total elevation difference for Coast Trail is 1,275 feet which is an average number. Of course, this is an overnight backcountry walk, 3 days normally, so make sure you've got all your overnight gear packed.