There are
2,444 mi
from Clarksville, TN to Eureka, CA
That's the driving distance. It would take 1 day 19 hours to go from Clarksville, Tennessee to Eureka, California.
The flight distance (direct flight from Clarksville, TN to Eureka, CA) is 1,992.53 mi.
2,444 mi = 3.22 kms