About ¼ or a fourth of the way, you can stop at Castile Cove, GA. This is about 11 minutes east of Fairburn.
About ⅓ or a third of the way, you can stop at College Park, GA. This is about 14 minutes northeast of Fairburn.
About ⅔ or two thirds of the way, you can stop at Atlanta, GA. This is about half an hour northeast of Fairburn, or about 14 minutes west of Decatur, GA.
If you drive straight through without stopping at all, the total distance is 28 miles. The distances shown above don't include local roads to get into each town, so if you're planning a long road trip, make sure you factor in traffic and road conditions, rest stop breaks, and interesting detours along the way. If you're in a rush, you can do the trip with zero stops, and your total travel time would be around 39 minutes.