There are
2,304 mi
from Clarksville, TN to Walnut Creek, CA
That's the driving distance. It would take 1 day 16 hours to go from Clarksville, Tennessee to Walnut Creek, California.
The flight distance (direct flight from Clarksville, TN to Walnut Creek, CA) is 1,900.90 mi.
2,304 mi = 3.22 kms