There are
1,577 mi
from Clarksville, TN to Roy, UT
That's the driving distance. It would take 1 day 3 hours to go from Clarksville, Tennessee to Roy, Utah.
The flight distance (direct flight from Clarksville, TN to Roy, UT) is 1,360.40 mi.
1,577 mi = 1.61 kms