| Peachtree Corners to Olympia (Washington) | 2,194.84 mi (3,532.26 km) |
| Peachtree Corners to Olympia Heights (Florida) | 615.32 mi (990.26 km) |
| Peachtree Corners to Omaha (Nebraska) | 818.87 mi (1,317.84 km) |
| Peachtree Corners to On Top of the World Designated Place (Florida) | 354.85 mi (571.08 km) |
| Peachtree Corners to Onalaska (Wisconsin) | 780.62 mi (1,256.29 km) |
| Peachtree Corners to Oneida (New York) | 780.59 mi (1,256.24 km) |
| Peachtree Corners to Oneonta (New York) | 768.14 mi (1,236.20 km) |
| Peachtree Corners to Ontario (California) | 1,903.01 mi (3,062.60 km) |
| Peachtree Corners to Ontario (Oregon) | 1,875.41 mi (3,018.18 km) |
| Peachtree Corners to Opa-locka (Florida) | 605.97 mi (975.22 km) |
| Peachtree Corners to Opelika (Alabama) | 111.85 mi (180.00 km) |
| Peachtree Corners to Opelousas (Louisiana) | 516.46 mi (831.16 km) |
| Peachtree Corners to Orange (California) | 1,917.91 mi (3,086.57 km) |
| Peachtree Corners to Orange (Texas) | 617.68 mi (994.06 km) |
| Peachtree Corners to Orange City (Florida) | 388.53 mi (625.28 km) |
