There are
2,176 mi
from Hayward, CA to West Allis, WI
That's the driving distance. It would take 1 day 13 hours to go from Hayward, California to West Allis, Wisconsin.
The flight distance (direct flight from Hayward, CA to West Allis, WI) is 1,818.96 mi.
2,176 mi = 3.22 kms