| Royal Tunbridge Wells to Orbetello | 791.43 mi (1,273.69 km) |
| Royal Tunbridge Wells to Oria | 1,108.23 mi (1,783.52 km) |
| Royal Tunbridge Wells to Oristano | 872.88 mi (1,404.77 km) |
| Royal Tunbridge Wells to Orta Nova | 998.18 mi (1,606.41 km) |
| Royal Tunbridge Wells to Orte | 827.28 mi (1,331.38 km) |
| Royal Tunbridge Wells to Ortona | 900.66 mi (1,449.47 km) |
| Royal Tunbridge Wells to Orvieto | 804.61 mi (1,294.89 km) |
| Royal Tunbridge Wells to Orzinuovi | 594.66 mi (957.02 km) |
| Royal Tunbridge Wells to Osimo | 812.03 mi (1,306.84 km) |
| Royal Tunbridge Wells to Ospitaletto | 591.94 mi (952.64 km) |
| Royal Tunbridge Wells to Ostuni | 1,094.64 mi (1,761.66 km) |
| Royal Tunbridge Wells to Ottaviano | 981.73 mi (1,579.94 km) |
| Royal Tunbridge Wells to Ovada | 592.65 mi (953.78 km) |
| Royal Tunbridge Wells to Ozieri | 840.04 mi (1,351.91 km) |
| Royal Tunbridge Wells to Paceco | 1,088.25 mi (1,751.36 km) |
