There are
2,090 mi
from Hayward, CA to Festus, MO
That's the driving distance. It would take 1 day 12 hours to go from Hayward, California to Festus, Missouri.
The flight distance (direct flight from Hayward, CA to Festus, MO) is 1,718.37 mi.
2,090 mi = 3.22 kms