| Port Orange to Orbetello | 4,998.80 mi (8,044.80 km) |
| Port Orange to Oria | 5,356.32 mi (8,620.16 km) |
| Port Orange to Oristano | 4,942.71 mi (7,954.52 km) |
| Port Orange to Orta Nova | 5,240.84 mi (8,434.31 km) |
| Port Orange to Orte | 5,052.89 mi (8,131.84 km) |
| Port Orange to Ortona | 5,149.29 mi (8,286.98 km) |
| Port Orange to Orvieto | 5,032.79 mi (8,099.49 km) |
| Port Orange to Orzinuovi | 4,860.87 mi (7,822.81 km) |
| Port Orange to Osimo | 5,074.07 mi (8,165.93 km) |
| Port Orange to Ospitaletto | 4,863.15 mi (7,826.48 km) |
| Port Orange to Ostuni | 5,346.49 mi (8,604.34 km) |
| Port Orange to Ottaviano | 5,197.87 mi (8,365.16 km) |
| Port Orange to Ovada | 4,821.87 mi (7,760.05 km) |
| Port Orange to Ozieri | 4,944.43 mi (7,957.29 km) |
| Port Orange to Paceco | 5,191.17 mi (8,354.37 km) |
