There are
435 mi
from Clarksville, TN to Kewanee, IL
That's the driving distance. It would take 8 hours 35 mins to go from Clarksville, Tennessee to Kewanee, Illinois.
The flight distance (direct flight from Clarksville, TN to Kewanee, IL) is 353.79 mi.
435 mi = 700.87 kms