There are
389 mi
from Middletown, OH to Waukesha, WI
That's the driving distance. It would take 7 hours 54 mins to go from Middletown, Ohio to Waukesha, Wisconsin.
The flight distance (direct flight from Middletown, OH to Waukesha, WI) is 312.98 mi.
389 mi = 626.26 kms