There is only one trailhead, so in and out is the way to trek it normally. The total elevation difference for Foley Ridge Trail is 2,690 feet which is a higher than average number. Now, this is roughly a 2-day backcountry hike, so make sure you've got all your overnight gear packed. Some parts of this backcountry trail are much higher up than other parts of the backcountry trail which of course means you need to be prepared for different conditions on different parts of the backcountry trail. At parts of the year this region sees very little rain, so do check for current fire restrictions before you go if you plan to bring a stove or make a camp fire. This is a wilderness trail that is quite long, so do pack enough food to last the whole trip. Foley Ridge Trail is 14.4 miles long; it's considered a longer backcountry trek.