Some parts of this great outdoors trail are much higher up than other parts of the great outdoors trail, so keep in mind that you may need to dress differently at different elevations. Being 17.8 miles long; it's a long great outdoors trail. This area 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. This backcountry hike should take you about 2.5 days, so make sure you've got all your overnight gear packed. Now this hiking trail is pretty long, so do pack enough food to last the whole trip. The total elevation difference for this great outdoors trail is 2,820 feet which is higher than average. There is only one trailhead, so in and out is the way to hike it normally.