This hiking and backpacking trail has only one trailhead, so in and out is the way to walk it normally. You should count on this backcountry walk taking about 8.5 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. This wilderness hiking trail sometimes gets very dry, so make sure you check current conditions and fire restrictions with local forest authorities before you head out. Cathedral Driveway goes through some very different elevations, so keep in mind that you may need to dress differently at different elevations. This is a wilderness hiking trail that is quite long, so make sure you bring plenty of supplies. This hiking and backpacking trail has a total elevation difference of 1,569 feet which is about average. With its 9.6 miles of walking distance; it's considered a longer backcountry hike.