There are
685 mi
from Duluth, MN to Shelbyville, IN
That's the driving distance. It would take 12 hours 56 mins to go from Duluth, Minnesota to Shelbyville, Indiana.
The flight distance (direct flight from Duluth, MN to Shelbyville, IN) is 594.17 mi.
685 mi = 1,101.88 kms