There are
395 mi
from Chattanooga, TN to Chillicothe, OH
That's the driving distance. It would take 8 hours 1 min to go from Chattanooga, Tennessee to Chillicothe, Ohio.
The flight distance (direct flight from Chattanooga, TN to Chillicothe, OH) is 322.71 mi.
395 mi = 636.45 kms