There are
556 mi
from Chattanooga, TN to Hannibal, MO
That's the driving distance. It would take 10 hours 27 mins to go from Chattanooga, Tennessee to Hannibal, Missouri.
The flight distance (direct flight from Chattanooga, TN to Hannibal, MO) is 462.48 mi.
556 mi = 894.10 kms