The Appalachian Trail is a marked hiking trail in the eastern US extending between Springer Mountain in Georgia and Mount Katahdin in Maine.
The trail is about 3,500km long and passes through the states of Georgia, North Carolina, Tennessee, Virginia, West Virginia, Maryland, Pennsylvania, New Jersey, New York, Connecticut, Massachusetts, Vermont, New Hampshire, and Maine.
The trail is maintained by 31 trail clubs and multiple partnerships, and managed by the National Park Service and the nonprofit Appalachian Trail Conservancy. The majority of the trail is in forest or wild lands, although some portions traverse towns, roads and farms.
The Appalachian Trail is famous for its many hikers, some of whom, called thru-hikers, attempt to hike it in its entirety in a single season like the guy featured on this video. For more info on local campsites click here.