There are
1,990 mi
from Clarksville, TN to Monrovia, CA
That's the driving distance. It would take 1 day 10 hours to go from Clarksville, Tennessee to Monrovia, California.
The flight distance (direct flight from Clarksville, TN to Monrovia, CA) is 1,727.68 mi.
1,990 mi = 1.61 kms