There are
2,014 mi
from Clarksville, TN to Poway, CA
That's the driving distance. It would take 1 day 11 hours to go from Clarksville, Tennessee to Poway, California.
The flight distance (direct flight from Clarksville, TN to Poway, CA) is 1,695.93 mi.
2,014 mi = 3.22 kms