This is a one trailhead backcountry hiking trail, so you'll be backcountry trekking it in and back out. Now this backpacking and hiking trail is pretty long, so make sure you bring plenty of supplies. Pompey Peak Trail is 7 miles long it's an average length hiking trail. This trek shouldn't take more than 6 hours, but of course some folks walk a bit slower and some a bit faster. Pompey Peak Trail has a total elevation difference of 3,836 feet, and that is higher than average. Different parts of this hiking trail are at very different elevations, and that means that some parts of the hiking trail could be very different from other parts of it.