There are
1,906 mi
from Clarksville, TN to Caldwell, ID
That's the driving distance. It would take 1 day 9 hours to go from Clarksville, Tennessee to Caldwell, Idaho.
The flight distance (direct flight from Clarksville, TN to Caldwell, ID) is 1,616.75 mi.
1,906 mi = 1.61 kms