| Buckhurst Hill to Oberkirch | 415.75 mi (669.08 km) |
| Buckhurst Hill to Obernburg am Main | 416.65 mi (670.53 km) |
| Buckhurst Hill to Obernkirchen | 388.98 mi (626.00 km) |
| Buckhurst Hill to Oberschleissheim | 562.65 mi (905.50 km) |
| Buckhurst Hill to Oberstdorf | 543.49 mi (874.66 km) |
| Buckhurst Hill to Obertraubling | 565.40 mi (909.93 km) |
| Buckhurst Hill to Obertshausen | 398.43 mi (641.21 km) |
| Buckhurst Hill to Oberursel | 384.65 mi (619.04 km) |
| Buckhurst Hill to Ochsenfurt | 459.92 mi (740.18 km) |
| Buckhurst Hill to Ochsenhausen | 504.85 mi (812.47 km) |
| Buckhurst Hill to Ochtrup | 307.32 mi (494.58 km) |
| Buckhurst Hill to Odenthal | 308.33 mi (496.21 km) |
| Buckhurst Hill to Oelde | 347.31 mi (558.94 km) |
| Buckhurst Hill to Oelsnitz | 533.19 mi (858.09 km) |
| Buckhurst Hill to Oer-Erkenschwick | 309.26 mi (497.71 km) |
