There are
581 mi
from Clarksville, TN to Ashtabula, OH
That's the driving distance. It would take 11 hours 17 mins to go from Clarksville, Tennessee to Ashtabula, Ohio.
The flight distance (direct flight from Clarksville, TN to Ashtabula, OH) is 509.23 mi.
581 mi = 934.80 kms