The total elevation difference for Red Mountain Twenty-five Trail is 1,871 feet which is an average number. This region does get very dry sometimes, so donít forget to check for any current fire restrictions before you go. Red Mountain Twenty-five Trail is quite long, so don't forget to pack enough supplies. Being 13.4 miles long; it's considered a longer walk. Different parts of this backcountry hiking trail are at very different elevations, so keep in mind that you may need to dress differently at different elevations. Now, this is roughly a 2-day walk, so better have big a backpack to fit all the stuff you need. This hiking and backpacking trail has only one trailhead, so in and out is the way to backcountry walk it normally.