There are
757 mi
from Dayton, OH to New Ulm, MN
That's the driving distance. It would take 14 hours 20 mins to go from Dayton, Ohio to New Ulm, Minnesota.
The flight distance (direct flight from Dayton, OH to New Ulm, MN) is 613.08 mi.
757 mi = 1,218.46 kms