There are
2,858 mi
from San Marcos, CA to Massapequa Park, NY
That's the driving distance. It would take 2 days 3 hours to go from San Marcos, California to Massapequa Park, New York.
The flight distance (direct flight from San Marcos, CA to Massapequa Park, NY) is 2,444.25 mi.
2,858 mi = 3.22 kms