There are
2,275 mi
from Clarksville, TN to Pittsburg, CA
That's the driving distance. It would take 1 day 16 hours to go from Clarksville, Tennessee to Pittsburg, California.
The flight distance (direct flight from Clarksville, TN to Pittsburg, CA) is 1,890.04 mi.
2,275 mi = 3,661.65 kms