There are
2,828 mi
from San Clemente, CA to Mamaroneck, NY
That's the driving distance. It would take 2 days 2 hours to go from San Clemente, California to Mamaroneck, New York.
The flight distance (direct flight from San Clemente, CA to Mamaroneck, NY) is 2,444.05 mi.
2,828 mi = 4,550.62 kms