There are
2,800 mi
from Rosemead, CA to Mamaroneck, NY
That's the driving distance. It would take 2 days 1 hour to go from Rosemead, California to Mamaroneck, New York.
The flight distance (direct flight from Rosemead, CA to Mamaroneck, NY) is 2,449.10 mi.
2,800 mi = 4,505.70 kms