| London Colney to Oberkirch | 431.51 mi (694.45 km) |
| London Colney to Obernburg am Main | 432.18 mi (695.52 km) |
| London Colney to Obernkirchen | 402.10 mi (647.11 km) |
| London Colney to Oberschleissheim | 578.40 mi (930.84 km) |
| London Colney to Oberstdorf | 559.24 mi (900.02 km) |
| London Colney to Obertraubling | 580.96 mi (934.96 km) |
| London Colney to Obertshausen | 413.88 mi (666.08 km) |
| London Colney to Oberursel | 400.06 mi (643.84 km) |
| London Colney to Ochsenfurt | 475.43 mi (765.14 km) |
| London Colney to Ochsenhausen | 520.64 mi (837.88 km) |
| London Colney to Ochtrup | 320.44 mi (515.70 km) |
| London Colney to Odenthal | 323.26 mi (520.24 km) |
| London Colney to Oelde | 361.09 mi (581.11 km) |
| London Colney to Oelsnitz | 548.05 mi (881.99 km) |
| London Colney to Oer-Erkenschwick | 323.37 mi (520.41 km) |
