| Buckingham to Noventa Vicentina | 734.31 mi (1,181.76 km) |
| Buckingham to Novi di Modena | 731.54 mi (1,177.31 km) |
| Buckingham to Novi Ligure | 670.45 mi (1,078.98 km) |
| Buckingham to Nuoro | 943.96 mi (1,519.16 km) |
| Buckingham to Occhiobello | 753.43 mi (1,212.53 km) |
| Buckingham to Oderzo | 746.01 mi (1,200.59 km) |
| Buckingham to Oggiono | 635.05 mi (1,022.01 km) |
| Buckingham to Olbia | 911.75 mi (1,467.32 km) |
| Buckingham to Oleggio | 621.03 mi (999.45 km) |
| Buckingham to Olgiate Comasco | 622.38 mi (1,001.63 km) |
| Buckingham to Olgiate Olona | 627.32 mi (1,009.58 km) |
| Buckingham to Omegna | 599.40 mi (964.64 km) |
| Buckingham to Opera | 650.96 mi (1,047.62 km) |
| Buckingham to Oppeano | 721.26 mi (1,160.76 km) |
| Buckingham to Orbassano | 619.90 mi (997.64 km) |
