There are
795 mi
from Chattanooga, TN to Palmetto Bay, FL
That's the driving distance. It would take 14 hours 38 mins to go from Chattanooga, Tennessee to Palmetto Bay, Florida.
The flight distance (direct flight from Chattanooga, TN to Palmetto Bay, FL) is 715.48 mi.
795 mi = 1,280.10 kms