105.11 kilometres (65.31 miles)
185 miles
According to Google Maps, the driving distance varies between 40.2 and 44.0 miles. See link below for driving directions.
The distance from Columbus, GA to Atlanta, GA is about 107.6 miles if you take I-85 N. That's about a hour and 50 minute car drive.
22 miles taking this route: Take GA-369 WEST to U.S. 19/GA-400. Turn right onto U.S. 19/GA-400 SOUTH. Take U.S. 19/GA-400 to Cumming.