There are
625 mi
from Chattanooga, TN to Pontiac, MI
That's the driving distance. It would take 12 hours 6 mins to go from Chattanooga, Tennessee to Pontiac, Michigan.
The flight distance (direct flight from Chattanooga, TN to Pontiac, MI) is 535.73 mi.
625 mi = 1,005.32 kms