| West Ham to Oberkirch | 413.70 mi (665.79 km) |
| West Ham to Obernburg am Main | 416.27 mi (669.92 km) |
| West Ham to Obernkirchen | 391.39 mi (629.89 km) |
| West Ham to Oberschleissheim | 561.51 mi (903.66 km) |
| West Ham to Oberstdorf | 541.36 mi (871.24 km) |
| West Ham to Obertraubling | 564.95 mi (909.19 km) |
| West Ham to Obertshausen | 398.22 mi (640.88 km) |
| West Ham to Oberursel | 384.54 mi (618.86 km) |
| West Ham to Ochsenfurt | 459.58 mi (739.62 km) |
| West Ham to Ochsenhausen | 503.09 mi (809.64 km) |
| West Ham to Ochtrup | 309.77 mi (498.53 km) |
| West Ham to Odenthal | 309.02 mi (497.32 km) |
| West Ham to Oelde | 349.22 mi (562.01 km) |
| West Ham to Oelsnitz | 533.93 mi (859.27 km) |
| West Ham to Oer-Erkenschwick | 310.88 mi (500.32 km) |
