Now, this is roughly a 3.5-day trek, so better have big a backpack to fit all the stuff you need. With its 23.2 miles of walking distance; it's considered a longer backcountry hike. This hiking and backpacking trail has only one trailhead, so you'll be backpacking it in and back out. Cottonwood Mountain Trail Sixty six is quite long, so do pack enough food to last the whole trip. At parts of the year this region sees very little rain, so donít forget to check for any current fire restrictions before you go. Cottonwood Mountain Trail Sixty six has a total elevation difference of 2,343 feet which is an average number. Some parts of Cottonwood Mountain Trail Sixty six are much higher up than other parts of the hiking and backpacking trail, so keep in mind that you may need to dress differently at different elevations.