McCay Trail has a total elevation difference of 2,363 feet which is about average. Now this hiking trail is pretty long, so don't forget to pack enough supplies. There is only one trailhead, so you're looking at an in and out backcountry hike. This region does get very dry sometimes, so do check for current fire restrictions before you go if you plan to bring a stove or make a camp fire. Different parts of McCay 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. The time needed for this backcountry walk is roughly 5.5 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. Being 6.4 miles long it's a mid length walk.