| Clacton-on-Sea to Noventa Vicentina | 653.10 mi (1,051.06 km) |
| Clacton-on-Sea to Novi di Modena | 653.04 mi (1,050.96 km) |
| Clacton-on-Sea to Novi Ligure | 598.91 mi (963.85 km) |
| Clacton-on-Sea to Nuoro | 883.41 mi (1,421.72 km) |
| Clacton-on-Sea to Occhiobello | 673.20 mi (1,083.41 km) |
| Clacton-on-Sea to Oderzo | 661.53 mi (1,064.64 km) |
| Clacton-on-Sea to Oggiono | 557.74 mi (897.59 km) |
| Clacton-on-Sea to Olbia | 849.19 mi (1,366.64 km) |
| Clacton-on-Sea to Oleggio | 546.79 mi (879.97 km) |
| Clacton-on-Sea to Olgiate Comasco | 546.28 mi (879.15 km) |
| Clacton-on-Sea to Olgiate Olona | 552.09 mi (888.51 km) |
| Clacton-on-Sea to Omegna | 524.83 mi (844.63 km) |
| Clacton-on-Sea to Opera | 575.59 mi (926.33 km) |
| Clacton-on-Sea to Oppeano | 640.78 mi (1,031.23 km) |
| Clacton-on-Sea to Orbassano | 552.42 mi (889.03 km) |
