| Halden to Noventa Vicentina | 956.47 mi (1,539.29 km) |
| Halden to Novi di Modena | 983.71 mi (1,583.12 km) |
| Halden to Novi Ligure | 999.10 mi (1,607.89 km) |
| Halden to Nuoro | 1,303.00 mi (2,096.98 km) |
| Halden to Occhiobello | 981.47 mi (1,579.52 km) |
| Halden to Oderzo | 923.04 mi (1,485.50 km) |
| Halden to Oggiono | 926.16 mi (1,490.51 km) |
| Halden to Olbia | 1,261.11 mi (2,029.55 km) |
| Halden to Oleggio | 942.07 mi (1,516.11 km) |
| Halden to Olgiate Comasco | 927.82 mi (1,493.18 km) |
| Halden to Olgiate Olona | 938.53 mi (1,510.41 km) |
| Halden to Omegna | 924.22 mi (1,487.38 km) |
| Halden to Opera | 954.24 mi (1,535.70 km) |
| Halden to Oppeano | 955.39 mi (1,537.56 km) |
| Halden to Orbassano | 989.40 mi (1,592.28 km) |
