| Caister-on-Sea to Noventa Vicentina | 674.63 mi (1,085.71 km) |
| Caister-on-Sea to Novi di Modena | 678.28 mi (1,091.58 km) |
| Caister-on-Sea to Novi Ligure | 632.34 mi (1,017.66 km) |
| Caister-on-Sea to Nuoro | 924.51 mi (1,487.86 km) |
| Caister-on-Sea to Occhiobello | 696.01 mi (1,120.11 km) |
| Caister-on-Sea to Oderzo | 677.74 mi (1,090.71 km) |
| Caister-on-Sea to Oggiono | 585.26 mi (941.88 km) |
| Caister-on-Sea to Olbia | 888.92 mi (1,430.58 km) |
| Caister-on-Sea to Oleggio | 577.93 mi (930.09 km) |
| Caister-on-Sea to Olgiate Comasco | 575.34 mi (925.92 km) |
| Caister-on-Sea to Olgiate Olona | 582.09 mi (936.78 km) |
| Caister-on-Sea to Omegna | 555.83 mi (894.52 km) |
| Caister-on-Sea to Opera | 605.22 mi (974.01 km) |
| Caister-on-Sea to Oppeano | 663.45 mi (1,067.72 km) |
| Caister-on-Sea to Orbassano | 589.97 mi (949.47 km) |
