There are
2,106 mi
from Vacaville, CA to Waukesha, WI
That's the driving distance. It would take 1 day 12 hours to go from Vacaville, California to Waukesha, Wisconsin.
The flight distance (direct flight from Vacaville, CA to Waukesha, WI) is 1,785.22 mi.
2,106 mi = 3.22 kms