There are
1,815 mi
from Montebello, CA to Clayton, MO
That's the driving distance. It would take 1 day 7 hours to go from Montebello, California to Clayton, Missouri.
The flight distance (direct flight from Montebello, CA to Clayton, MO) is 1,573.20 mi.
1,815 mi = 2,921.40 kms