There are
842 mi
from Chattanooga, TN to Mamaroneck, NY
That's the driving distance. It would take 15 hours 58 mins to go from Chattanooga, Tennessee to Mamaroneck, New York.
The flight distance (direct flight from Chattanooga, TN to Mamaroneck, NY) is 749.79 mi.
842 mi = 1,354.57 kms