Almost all of the the Michigan Road’s original route has survived to this day. From one end, you can drive straight through to the other end with only a few brief detours. Along the way, the road takes on many different characters, from almost-forgotten farm road to country US highway to major city thoroughfare to Interstate highway.

The map shows the gist of the route, which roughly follows old US 421 and US 421 north from Madison through Indianapolis, and then State Road 29 to Logansport. From there it follows State Road 25 to Rochester, and then old US 31 through Plymouth to downtown South Bend. It then follows old US 20 and US 20 to downtown Michigan City, where it follows US 12 to its end.

You’ll find guide signs all along the route that look like what you see below. For turn-by-turn directions, click here.