There are
1,957 mi
from Hayward, CA to Hannibal, MO
That's the driving distance. It would take 1 day 9 hours to go from Hayward, California to Hannibal, Missouri.
The flight distance (direct flight from Hayward, CA to Hannibal, MO) is 1,654.77 mi.
1,957 mi = 1.61 kms