The American Discovery Trail is generally split into four regions, Eastern, Central – Northern Route, Central – Southern Route, Western.  Data books and GPX files describing the routes are available through the ADTS store. The northern route is 4,834 miles and the southern 5,057.
(Because most through hikers hike the trail from east to west the trail is listed in that direction.)

See Also:  Trail Gallery    Trail Tales

The Eastern American Discovery Trail

The eastern section of the trail runs from Cape Henlopen in Delaware to the western side of Ohio passing through

Delaware
Maryland & D.C.
West Virginia
Ohio and Kentucky

The American Discovery Trail divides into northern and southern routes in Elizabethtown, Ohio, with just one mile of the southern route and almost 60 miles of the northern route in Ohio.

The Central American Discovery Trail – northern route

The northern route runs from Elizabethtown, Ohio to Denver, Colorado passing through 

Ohio
Indiana
Illinois
Iowa
Nebraska
Colorado

The Central American Discovery Trail – southern route

The southern route also runs from Elizabethtown, Ohio to Denver, Colorado passing through

Ohio
Indiana
Illinois
Missouri
Kansas
Colorado

The Western American Discovery Trail

The western section runs from Denver, Colorado to Point Reyes National Seashore near San Francisco, California passing through

Colorado
Utah
Nevada
California