| Cwmbran to Noventa Vicentina | 796.68 mi (1,282.13 km) |
| Cwmbran to Novi di Modena | 790.34 mi (1,271.92 km) |
| Cwmbran to Novi Ligure | 721.23 mi (1,160.70 km) |
| Cwmbran to Nuoro | 979.66 mi (1,576.62 km) |
| Cwmbran to Occhiobello | 814.34 mi (1,310.56 km) |
| Cwmbran to Oderzo | 812.96 mi (1,308.33 km) |
| Cwmbran to Oggiono | 693.14 mi (1,115.50 km) |
| Cwmbran to Olbia | 949.99 mi (1,528.86 km) |
| Cwmbran to Oleggio | 675.53 mi (1,087.17 km) |
| Cwmbran to Olgiate Comasco | 679.12 mi (1,092.94 km) |
| Cwmbran to Olgiate Olona | 682.95 mi (1,099.11 km) |
| Cwmbran to Omegna | 654.56 mi (1,053.41 km) |
| Cwmbran to Opera | 706.51 mi (1,137.02 km) |
| Cwmbran to Oppeano | 782.73 mi (1,259.68 km) |
| Cwmbran to Orbassano | 666.65 mi (1,072.86 km) |
