Stephen Von Worley mapped out the most efficient drive that would take a person through every state in the lower 48 and D.C. The route begins in South Berwick, Maine and ends 6,872 miles later in Taft, Montana.
Found on http://twentytwowords.com/how-to-drive-through-all-48-of-the-continental-united-states-in-113-hours/
You can work with the map at the Google Maps link
