There are
954 mi
from Clarksville, TN to Mamaroneck, NY
That's the driving distance. It would take 18 hours 3 mins to go from Clarksville, Tennessee to Mamaroneck, New York.
The flight distance (direct flight from Clarksville, TN to Mamaroneck, NY) is 794.21 mi.
954 mi = 1,535.78 kms