There are
408 mi
from Dayton, OH to Oconomowoc, WI
That's the driving distance. It would take 8 hours 2 mins to go from Dayton, Ohio to Oconomowoc, Wisconsin.
The flight distance (direct flight from Dayton, OH to Oconomowoc, WI) is 321.55 mi.
408 mi = 656.79 kms