| Addlestone to Orbetello | 826.18 mi (1,329.61 km) |
| Addlestone to Oria | 1,144.38 mi (1,841.70 km) |
| Addlestone to Oristano | 903.87 mi (1,454.64 km) |
| Addlestone to Orta Nova | 1,034.15 mi (1,664.30 km) |
| Addlestone to Orte | 862.62 mi (1,388.25 km) |
| Addlestone to Ortona | 936.62 mi (1,507.34 km) |
| Addlestone to Orvieto | 839.94 mi (1,351.76 km) |
| Addlestone to Orzinuovi | 630.50 mi (1,014.70 km) |
| Addlestone to Osimo | 848.13 mi (1,364.93 km) |
| Addlestone to Ospitaletto | 627.91 mi (1,010.53 km) |
| Addlestone to Ostuni | 1,130.83 mi (1,819.89 km) |
| Addlestone to Ottaviano | 1,017.18 mi (1,636.99 km) |
| Addlestone to Ovada | 627.27 mi (1,009.49 km) |
| Addlestone to Ozieri | 871.89 mi (1,403.17 km) |
| Addlestone to Paceco | 1,121.45 mi (1,804.81 km) |
