| Wallingford to Noventa Vicentina | 724.32 mi (1,165.69 km) |
| Wallingford to Novi di Modena | 720.10 mi (1,158.89 km) |
| Wallingford to Novi Ligure | 656.01 mi (1,055.75 km) |
| Wallingford to Nuoro | 925.32 mi (1,489.16 km) |
| Wallingford to Occhiobello | 742.86 mi (1,195.51 km) |
| Wallingford to Oderzo | 738.07 mi (1,187.81 km) |
| Wallingford to Oggiono | 623.22 mi (1,002.98 km) |
| Wallingford to Olbia | 893.76 mi (1,438.37 km) |
| Wallingford to Oleggio | 607.83 mi (978.21 km) |
| Wallingford to Olgiate Comasco | 610.02 mi (981.73 km) |
| Wallingford to Olgiate Olona | 614.55 mi (989.02 km) |
| Wallingford to Omegna | 586.41 mi (943.74 km) |
| Wallingford to Opera | 638.19 mi (1,027.07 km) |
| Wallingford to Oppeano | 710.88 mi (1,144.06 km) |
| Wallingford to Orbassano | 604.08 mi (972.17 km) |
