There are
759 mi
from Duluth, MN to Sandusky, OH
That's the driving distance. It would take 14 hours 19 mins to go from Duluth, Minnesota to Sandusky, Ohio.
The flight distance (direct flight from Duluth, MN to Sandusky, OH) is 593.50 mi.
759 mi = 1,221.42 kms