There are
2,930 mi
from San Leandro, CA to Mamaroneck, NY
That's the driving distance. It would take 2 days 3 hours to go from San Leandro, California to Mamaroneck, New York.
The flight distance (direct flight from San Leandro, CA to Mamaroneck, NY) is 2,564.16 mi.
2,930 mi = 3.22 kms