There are
482 mi
from Clarksville, TN to Sycamore, IL
That's the driving distance. It would take 9 hours 19 mins to go from Clarksville, Tennessee to Sycamore, Illinois.
The flight distance (direct flight from Clarksville, TN to Sycamore, IL) is 383.80 mi.
482 mi = 775.81 kms