| Antrim to Noventa Vicentina | 1,017.47 mi (1,637.46 km) |
| Antrim to Novi di Modena | 1,016.20 mi (1,635.41 km) |
| Antrim to Novi Ligure | 956.12 mi (1,538.72 km) |
| Antrim to Nuoro | 1,225.27 mi (1,971.89 km) |
| Antrim to Occhiobello | 1,037.24 mi (1,669.27 km) |
| Antrim to Oderzo | 1,026.04 mi (1,651.25 km) |
| Antrim to Oggiono | 920.07 mi (1,480.71 km) |
| Antrim to Olbia | 1,194.31 mi (1,922.06 km) |
| Antrim to Oleggio | 906.65 mi (1,459.12 km) |
| Antrim to Olgiate Comasco | 907.71 mi (1,460.83 km) |
| Antrim to Olgiate Olona | 912.83 mi (1,469.05 km) |
| Antrim to Omegna | 884.98 mi (1,424.24 km) |
| Antrim to Opera | 936.45 mi (1,507.08 km) |
| Antrim to Oppeano | 1,004.90 mi (1,617.22 km) |
| Antrim to Orbassano | 904.99 mi (1,456.44 km) |
