| Southall to Noventa Vicentina | 694.11 mi (1,117.05 km) |
| Southall to Novi di Modena | 690.65 mi (1,111.49 km) |
| Southall to Novi Ligure | 628.52 mi (1,011.51 km) |
| Southall to Nuoro | 901.71 mi (1,451.16 km) |
| Southall to Occhiobello | 712.94 mi (1,147.36 km) |
| Southall to Oderzo | 706.97 mi (1,137.76 km) |
| Southall to Oggiono | 593.97 mi (955.91 km) |
| Southall to Olbia | 869.46 mi (1,399.26 km) |
| Southall to Oleggio | 579.45 mi (932.53 km) |
| Southall to Olgiate Comasco | 581.10 mi (935.18 km) |
| Southall to Olgiate Olona | 585.89 mi (942.90 km) |
| Southall to Omegna | 557.89 mi (897.83 km) |
| Southall to Opera | 609.53 mi (980.95 km) |
| Southall to Oppeano | 680.86 mi (1,095.73 km) |
| Southall to Orbassano | 577.71 mi (929.73 km) |
