There are
1,721 mi
from Montebello, CA to Watertown, SD
That's the driving distance. It would take 1 day 6 hours to go from Montebello, California to Watertown, South Dakota.
The flight distance (direct flight from Montebello, CA to Watertown, SD) is 1,342.80 mi.
1,721 mi = 2,768.97 kms