There are
2,981 mi
from Montebello, CA to Watertown, MA
That's the driving distance. It would take 2 days 5 hours to go from Montebello, California to Watertown, Massachusetts.
The flight distance (direct flight from Montebello, CA to Watertown, MA) is 2,579.03 mi.
2,981 mi = 4,796.70 kms