| Conwy to Noventa Vicentina | 882.72 mi (1,420.60 km) |
| Conwy to Novi di Modena | 880.19 mi (1,416.53 km) |
| Conwy to Novi Ligure | 818.30 mi (1,316.93 km) |
| Conwy to Nuoro | 1,087.05 mi (1,749.44 km) |
| Conwy to Occhiobello | 901.98 mi (1,451.60 km) |
| Conwy to Oderzo | 893.46 mi (1,437.88 km) |
| Conwy to Oggiono | 783.69 mi (1,261.23 km) |
| Conwy to Olbia | 1,055.93 mi (1,699.36 km) |
| Conwy to Oleggio | 769.42 mi (1,238.26 km) |
| Conwy to Olgiate Comasco | 770.97 mi (1,240.76 km) |
| Conwy to Olgiate Olona | 775.83 mi (1,248.58 km) |
| Conwy to Omegna | 747.85 mi (1,203.55 km) |
| Conwy to Opera | 799.47 mi (1,286.63 km) |
| Conwy to Oppeano | 869.77 mi (1,399.76 km) |
| Conwy to Orbassano | 766.73 mi (1,233.93 km) |
