There are
644 mi
from Knoxville, TN to Dunkirk, NY
That's the driving distance. It would take 12 hours 10 mins to go from Knoxville, Tennessee to Dunkirk, New York.
The flight distance (direct flight from Knoxville, TN to Dunkirk, NY) is 512.78 mi.
644 mi = 1,036.96 kms