| Oldbury to Oberkirch | 520.97 mi (838.43 km) |
| Oldbury to Obernburg am Main | 516.56 mi (831.32 km) |
| Oldbury to Obernkirchen | 469.34 mi (755.33 km) |
| Oldbury to Oberschleissheim | 665.38 mi (1,070.83 km) |
| Oldbury to Oberstdorf | 648.80 mi (1,044.14 km) |
| Oldbury to Obertraubling | 665.28 mi (1,070.67 km) |
| Oldbury to Obertshausen | 497.59 mi (800.79 km) |
| Oldbury to Oberursel | 483.41 mi (777.97 km) |
| Oldbury to Ochsenfurt | 559.53 mi (900.47 km) |
| Oldbury to Ochsenhausen | 609.43 mi (980.78 km) |
| Oldbury to Ochtrup | 388.78 mi (625.69 km) |
| Oldbury to Odenthal | 403.20 mi (648.89 km) |
| Oldbury to Oelde | 432.93 mi (696.73 km) |
| Oldbury to Oelsnitz | 626.24 mi (1,007.84 km) |
| Oldbury to Oer-Erkenschwick | 397.74 mi (640.11 km) |
