There are
671 mi
from Clarksville, TN to Dunkirk, NY
That's the driving distance. It would take 12 hours 58 mins to go from Clarksville, Tennessee to Dunkirk, New York.
The flight distance (direct flight from Clarksville, TN to Dunkirk, NY) is 592.81 mi.
671 mi = 1,080.06 kms