There are
1,566 mi
from Garland, TX to Rockville Centre, NY
That's the driving distance. It would take 1 day 4 hours to go from Garland, Texas to Rockville Centre, New York.
The flight distance (direct flight from Garland, TX to Rockville Centre, NY) is 1,375.30 mi.
1,566 mi = 1.61 kms