MapQuest gives it an estimated one hour and 58 minutes but go ahead and call it about two hours if it makes you feel good because it is after all only an estimate.
Chattanooga is approximately a 2-hour drive away from Atlanta, GA.
2 hours
mileage between Chattanooga ,TN Atlanta , GA
120 miles
MapQuest gives the estimated driving time as 1 hour and 56 minutes but feel free to call it about two hours.
Chattanooga, Tennessee
45 minutes
The shortest time is 1 hour and 27 minutes.
About 23 hours
Google Maps estimates the driving time as 38 minutes.
About an hour
Google Maps estimates the driving time as 31 minutes.