There are
1,783 mi
from San Bernardino, CA to Festus, MO
That's the driving distance. It would take 1 day 7 hours to go from San Bernardino, California to Festus, Missouri.
The flight distance (direct flight from San Bernardino, CA to Festus, MO) is 1,521.24 mi.
1,783 mi = 1.61 kms