| Horten to Noventa Vicentina | 977.88 mi (1,573.74 km) |
| Horten to Novi di Modena | 1,003.94 mi (1,615.68 km) |
| Horten to Novi Ligure | 1,015.35 mi (1,634.05 km) |
| Horten to Nuoro | 1,320.83 mi (2,125.67 km) |
| Horten to Occhiobello | 1,002.94 mi (1,614.08 km) |
| Horten to Oderzo | 946.27 mi (1,522.88 km) |
| Horten to Oggiono | 943.32 mi (1,518.13 km) |
| Horten to Olbia | 1,279.14 mi (2,058.58 km) |
| Horten to Oleggio | 957.83 mi (1,541.48 km) |
| Horten to Olgiate Comasco | 944.21 mi (1,519.56 km) |
| Horten to Olgiate Olona | 954.78 mi (1,536.57 km) |
| Horten to Omegna | 939.45 mi (1,511.89 km) |
| Horten to Opera | 971.21 mi (1,563.01 km) |
| Horten to Oppeano | 976.15 mi (1,570.96 km) |
| Horten to Orbassano | 1,003.16 mi (1,614.42 km) |
