There are
1,967 mi
from Clarksville, TN to Upland, CA
That's the driving distance. It would take 1 day 10 hours to go from Clarksville, Tennessee to Upland, California.
The flight distance (direct flight from Clarksville, TN to Upland, CA) is 1,708.87 mi.
1,967 mi = 3,166.12 kms