There are
869 mi
from Wilmington, DE to Oconomowoc, WI
That's the driving distance. It would take 16 hours 22 mins to go from Wilmington, Delaware to Oconomowoc, Wisconsin.
The flight distance (direct flight from Wilmington, DE to Oconomowoc, WI) is 709.27 mi.
869 mi = 1,398.52 kms