The total elevation difference for this backpacking trail is 714 feet which is a lower than average number. You should count on this trek taking about 6.5 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. This is a backcountry hiking trail that is quite long, so make sure you bring plenty of supplies. With its 7 miles of walking distance it's a mid length trek. There's not much difference in elevation along San Clemente Trail which means the conditions are about the same from start to finish. This is a one trailhead backpacking trail, so in and out is the way to backcountry walk it normally. This backcountry hiking trail sometimes gets very dry, so make sure you check current conditions and fire restrictions with local forest authorities before you head out.