There are
853 mi
from Wilmington, DE to Waukesha, WI
That's the driving distance. It would take 16 hours 6 mins to go from Wilmington, Delaware to Waukesha, Wisconsin.
The flight distance (direct flight from Wilmington, DE to Waukesha, WI) is 694.44 mi.
853 mi = 1,372.30 kms