There are
605 mi
from Chattanooga, TN to Hyattsville, MD
That's the driving distance. It would take 11 hours 19 mins to go from Chattanooga, Tennessee to Hyattsville, Maryland.
The flight distance (direct flight from Chattanooga, TN to Hyattsville, MD) is 534.46 mi.
605 mi = 974.46 kms