| Tadworth to Orbetello | 814.85 mi (1,311.38 km) |
| Tadworth to Oria | 1,132.58 mi (1,822.72 km) |
| Tadworth to Oristano | 893.77 mi (1,438.38 km) |
| Tadworth to Orta Nova | 1,022.41 mi (1,645.42 km) |
| Tadworth to Orte | 851.09 mi (1,369.70 km) |
| Tadworth to Ortona | 924.89 mi (1,488.46 km) |
| Tadworth to Orvieto | 828.42 mi (1,333.21 km) |
| Tadworth to Orzinuovi | 618.81 mi (995.88 km) |
| Tadworth to Osimo | 836.35 mi (1,345.97 km) |
| Tadworth to Ospitaletto | 616.18 mi (991.64 km) |
| Tadworth to Ostuni | 1,119.02 mi (1,800.89 km) |
| Tadworth to Ottaviano | 1,005.62 mi (1,618.39 km) |
| Tadworth to Ovada | 615.97 mi (991.31 km) |
| Tadworth to Ozieri | 861.50 mi (1,386.45 km) |
| Tadworth to Paceco | 1,110.63 mi (1,787.39 km) |
