There are
147 mi
from Chattanooga, TN to Mcdonough, GA
That's the driving distance. It would take 2 hours 52 mins to go from Chattanooga, Tennessee to Mcdonough, Georgia.
The flight distance (direct flight from Chattanooga, TN to Mcdonough, GA) is 128.86 mi.
147 mi = 236.30 kms