There are
2,132 mi
from Hayward, CA to Watertown, WI
That's the driving distance. It would take 1 day 13 hours to go from Hayward, California to Watertown, Wisconsin.
The flight distance (direct flight from Hayward, CA to Watertown, WI) is 1,782.65 mi.
2,132 mi = 3.22 kms