There are
1,844 mi
from San Clemente, CA to Hannibal, MO
That's the driving distance. It would take 1 day 8 hours to go from San Clemente, California to Hannibal, Missouri.
The flight distance (direct flight from San Clemente, CA to Hannibal, MO) is 1,513.89 mi.
1,844 mi = 2,968.41 kms