There are
2,018 mi
from Hayward, CA to Platteville, WI
That's the driving distance. It would take 1 day 10 hours to go from Hayward, California to Platteville, Wisconsin.
The flight distance (direct flight from Hayward, CA to Platteville, WI) is 1,693.62 mi.
2,018 mi = 3.22 kms