There are
2,405 mi
from Clarksville, TN to Mt Vernon, WA
That's the driving distance. It would take 1 day 18 hours to go from Clarksville, Tennessee to Mt Vernon, Washington.
The flight distance (direct flight from Clarksville, TN to Mt Vernon, WA) is 1,940.62 mi.
2,405 mi = 3.22 kms