There are
2,029 mi
from Hayward, CA to Wentzville, MO
That's the driving distance. It would take 1 day 10 hours to go from Hayward, California to Wentzville, Missouri.
The flight distance (direct flight from Hayward, CA to Wentzville, MO) is 1,688.26 mi.
2,029 mi = 3.22 kms