There are
569 mi
from Chattanooga, TN to New Smyrna Beach, FL
That's the driving distance. It would take 10 hours 28 mins to go from Chattanooga, Tennessee to New Smyrna Beach, Florida.
The flight distance (direct flight from Chattanooga, TN to New Smyrna Beach, FL) is 488.62 mi.
569 mi = 915.70 kms