U.S. Route 31 (också kallad U.S. Highway 31 eller med förkortningen US 31 ) är en amerikansk landsväg . Den går ifrån Spanish Fort i söder till Mackinaw City i norr och har en längd på 2 061 km .
Petoskey, Michigan
Charlevoix, Michigan
Traverse City, Michigan
Manistee, Michigan
Pere Marquette, Michigan
Pentwater, Michigan
Montague, Michigan
Ludington, Michigan
Muskegon, Michigan
Fruitport, Michigan
Grand Haven, Michigan
Holland, Michigan
Saugatuck, Michigan
South Haven, Michigan
Benton Harbor, Michigan
Saint Joseph, Michigan
Carmel, Indiana
Indianapolis, Indiana
South Bend, Indiana
Kokomo, Indiana
Columbus, Indiana
Louisville, Kentucky
Bardstown, Kentucky
Glasgow, Kentucky
Fort Knox, Kentucky
Elizabethtown, Kentucky
Bowling Green, Kentucky
Nashville, Tennessee
Columbia, Tennessee
Athens, Alabama
Decatur, Alabama
Hartselle, Alabama
Cullman, Alabama
Hanceville, Alabama
Birmingham, Alabama
Hoover, Alabama
Prattville, Alabama
Montgomery, Alabama
Brewton, Alabama
Atmore, Alabama