There are
570 mi
from Clarksville, TN to Pella, IA
That's the driving distance. It would take 11 hours 2 mins to go from Clarksville, Tennessee to Pella, Iowa.
The flight distance (direct flight from Clarksville, TN to Pella, IA) is 450.03 mi.
570 mi = 917.58 kms