| Buckingham to Oberkirch | 466.05 mi (750.04 km) |
| Buckingham to Obernburg am Main | 465.13 mi (748.55 km) |
| Buckingham to Obernkirchen | 428.60 mi (689.77 km) |
| Buckingham to Oberschleissheim | 612.26 mi (985.33 km) |
| Buckingham to Oberstdorf | 593.81 mi (955.65 km) |
| Buckingham to Obertraubling | 613.95 mi (988.05 km) |
| Buckingham to Obertshausen | 446.59 mi (718.71 km) |
| Buckingham to Oberursel | 432.63 mi (696.24 km) |
| Buckingham to Ochsenfurt | 508.31 mi (818.04 km) |
| Buckingham to Ochsenhausen | 555.02 mi (893.21 km) |
| Buckingham to Ochtrup | 347.14 mi (558.68 km) |
| Buckingham to Odenthal | 354.48 mi (570.49 km) |
| Buckingham to Oelde | 389.28 mi (626.48 km) |
| Buckingham to Oelsnitz | 578.86 mi (931.59 km) |
| Buckingham to Oer-Erkenschwick | 352.45 mi (567.21 km) |
