The total elevation difference for Tanner Cutoff Trail is 3,045 feet which is a higher than average number. This trek shouldn't take more than 3.5 hours, but of course some folks walk a bit slower and some a bit faster. Tanner Cutoff Trail is 3.8 miles long it's a shorter type hike. Different parts of this great outdoors trail are at very different elevations, and that means that some parts of the great outdoors trail could be very different from other parts of it. This is not a very long backpacking trail but you should still bring some emergency supplies just in case something happens. This wilderness hiking trail has only one trailhead, so you're looking at an in and out backcountry trek.