There are
1,648 mi
from Clarksville, TN to Pocatello, ID
That's the driving distance. It would take 1 day 5 hours to go from Clarksville, Tennessee to Pocatello, Idaho.
The flight distance (direct flight from Clarksville, TN to Pocatello, ID) is 1,397.57 mi.
1,648 mi = 1.61 kms