hiking trail extending from central Me. to N Ga., along the Appalachian Mountains: c. 2,050 mi (3,299 km)
See Appalachian Trail in American Heritage Dictionary 4
A hiking path of the eastern United States extending about 3,298 km (2,050 mi) from Mount Katahdin in central Maine to Springer Mountain in northern Georgia. It is the world's longest continuous mountain trail.