| Harwich to Noventa Vicentina | 655.47 mi (1,054.87 km) |
| Harwich to Novi di Modena | 656.08 mi (1,055.87 km) |
| Harwich to Novi Ligure | 603.44 mi (971.15 km) |
| Harwich to Nuoro | 889.51 mi (1,431.53 km) |
| Harwich to Occhiobello | 675.82 mi (1,087.62 km) |
| Harwich to Oderzo | 662.95 mi (1,066.92 km) |
| Harwich to Oggiono | 561.14 mi (903.07 km) |
| Harwich to Olbia | 855.02 mi (1,376.02 km) |
| Harwich to Oleggio | 550.86 mi (886.52 km) |
| Harwich to Olgiate Comasco | 549.96 mi (885.07 km) |
| Harwich to Olgiate Olona | 555.95 mi (894.72 km) |
| Harwich to Omegna | 528.85 mi (851.11 km) |
| Harwich to Opera | 579.40 mi (932.46 km) |
| Harwich to Oppeano | 643.35 mi (1,035.37 km) |
| Harwich to Orbassano | 557.71 mi (897.54 km) |
