| Twickenham to Noventa Vicentina | 690.23 mi (1,110.82 km) |
| Twickenham to Novi di Modena | 686.62 mi (1,105.01 km) |
| Twickenham to Novi Ligure | 624.22 mi (1,004.59 km) |
| Twickenham to Nuoro | 897.12 mi (1,443.78 km) |
| Twickenham to Occhiobello | 709.00 mi (1,141.02 km) |
| Twickenham to Oderzo | 703.32 mi (1,131.89 km) |
| Twickenham to Oggiono | 589.91 mi (949.36 km) |
| Twickenham to Olbia | 864.91 mi (1,391.93 km) |
| Twickenham to Oleggio | 575.25 mi (925.78 km) |
| Twickenham to Olgiate Comasco | 576.98 mi (928.56 km) |
| Twickenham to Olgiate Olona | 581.73 mi (936.21 km) |
| Twickenham to Omegna | 553.71 mi (891.11 km) |
| Twickenham to Opera | 605.37 mi (974.26 km) |
| Twickenham to Oppeano | 676.94 mi (1,089.43 km) |
| Twickenham to Orbassano | 573.29 mi (922.63 km) |
