This is not a very long trail but you should still bring some emergency supplies just in case something happens. Allens Bay Trail stays roughly within the same elevation zone the whole time, so you get pretty much the same conditions along the whole backcountry trail. You should count on this hike taking about 4.5 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. Allens Bay Trail has only one trailhead, so you'll be hiking it in and back out. The total elevation difference for Allens Bay Trail is 148 feet which is a lower than average number. Allens Bay Trail is 4.8 miles long it's an average length backcountry trail.