There are
2,005 mi
from Clarksville, TN to Fountain Valley, CA
That's the driving distance. It would take 1 day 11 hours to go from Clarksville, Tennessee to Fountain Valley, California.
The flight distance (direct flight from Clarksville, TN to Fountain Valley, CA) is 1,732.69 mi.
2,005 mi = 3,227.11 kms