There are
606 mi
from Chattanooga, TN to Monroeville, PA
That's the driving distance. It would take 11 hours 24 mins to go from Chattanooga, Tennessee to Monroeville, Pennsylvania.
The flight distance (direct flight from Chattanooga, TN to Monroeville, PA) is 478.30 mi.
606 mi = 975.78 kms