There are
2,942 mi
from Hayward, CA to Rockville Centre, NY
That's the driving distance. It would take 2 days 3 hours to go from Hayward, California to Rockville Centre, New York.
The flight distance (direct flight from Hayward, CA to Rockville Centre, NY) is 2,570.32 mi.
2,942 mi = 3.22 kms