| Milford Haven to Noventa Vicentina | 876.47 mi (1,410.54 km) |
| Milford Haven to Novi di Modena | 868.38 mi (1,397.51 km) |
| Milford Haven to Novi Ligure | 795.26 mi (1,279.84 km) |
| Milford Haven to Nuoro | 1,043.09 mi (1,678.69 km) |
| Milford Haven to Occhiobello | 893.38 mi (1,437.75 km) |
| Milford Haven to Oderzo | 894.81 mi (1,440.05 km) |
| Milford Haven to Oggiono | 771.17 mi (1,241.08 km) |
| Milford Haven to Olbia | 1,015.25 mi (1,633.89 km) |
| Milford Haven to Oleggio | 751.81 mi (1,209.92 km) |
| Milford Haven to Olgiate Comasco | 756.53 mi (1,217.51 km) |
| Milford Haven to Olgiate Olona | 759.78 mi (1,222.74 km) |
| Milford Haven to Omegna | 731.27 mi (1,176.87 km) |
| Milford Haven to Opera | 783.18 mi (1,260.41 km) |
| Milford Haven to Oppeano | 862.12 mi (1,387.45 km) |
| Milford Haven to Orbassano | 738.70 mi (1,188.83 km) |
