| Colwyn Bay to Noventa Vicentina | 878.58 mi (1,413.93 km) |
| Colwyn Bay to Novi di Modena | 876.22 mi (1,410.13 km) |
| Colwyn Bay to Novi Ligure | 814.71 mi (1,311.15 km) |
| Colwyn Bay to Nuoro | 1,084.16 mi (1,744.78 km) |
| Colwyn Bay to Occhiobello | 897.90 mi (1,445.03 km) |
| Colwyn Bay to Oderzo | 889.10 mi (1,430.86 km) |
| Colwyn Bay to Oggiono | 779.77 mi (1,254.92 km) |
| Colwyn Bay to Olbia | 1,052.92 mi (1,694.50 km) |
| Colwyn Bay to Oleggio | 765.67 mi (1,232.22 km) |
| Colwyn Bay to Olgiate Comasco | 767.11 mi (1,234.55 km) |
| Colwyn Bay to Olgiate Olona | 772.03 mi (1,242.46 km) |
| Colwyn Bay to Omegna | 744.07 mi (1,197.47 km) |
| Colwyn Bay to Opera | 795.67 mi (1,280.50 km) |
| Colwyn Bay to Oppeano | 865.67 mi (1,393.17 km) |
| Colwyn Bay to Orbassano | 763.33 mi (1,228.47 km) |
