There are
873 mi
from Clarksville, TN to Lexington, NE
That's the driving distance. It would take 16 hours 16 mins to go from Clarksville, Tennessee to Lexington, Nebraska.
The flight distance (direct flight from Clarksville, TN to Lexington, NE) is 728.75 mi.
873 mi = 1,404.31 kms