| Alpharetta to Orbetello | 4,930.63 mi (7,935.08 km) |
| Alpharetta to Oria | 5,283.92 mi (8,503.65 km) |
| Alpharetta to Oristano | 4,897.01 mi (7,880.97 km) |
| Alpharetta to Orta Nova | 5,168.49 mi (8,317.88 km) |
| Alpharetta to Orte | 4,981.81 mi (8,017.45 km) |
| Alpharetta to Ortona | 5,074.01 mi (8,165.84 km) |
| Alpharetta to Orvieto | 4,960.74 mi (7,983.54 km) |
| Alpharetta to Orzinuovi | 4,776.56 mi (7,687.13 km) |
| Alpharetta to Osimo | 4,993.99 mi (8,037.06 km) |
| Alpharetta to Ospitaletto | 4,777.54 mi (7,688.71 km) |
| Alpharetta to Ostuni | 5,272.84 mi (8,485.81 km) |
| Alpharetta to Ottaviano | 5,131.61 mi (8,258.53 km) |
| Alpharetta to Ovada | 4,745.23 mi (7,636.71 km) |
| Alpharetta to Ozieri | 4,893.35 mi (7,875.09 km) |
| Alpharetta to Paceco | 5,147.62 mi (8,284.30 km) |
