| Bochum to Obernburg am Main | 141.35 mi (227.48 km) |
| Bochum to Obernkirchen | 97.57 mi (157.02 km) |
| Bochum to Oberschleissheim | 295.55 mi (475.64 km) |
| Bochum to Oberstdorf | 313.14 mi (503.96 km) |
| Bochum to Obertraubling | 279.40 mi (449.65 km) |
| Bochum to Obertshausen | 120.64 mi (194.15 km) |
| Bochum to Oberursel | 106.44 mi (171.30 km) |
| Bochum to Ochsenfurt | 177.95 mi (286.38 km) |
| Bochum to Ochsenhausen | 265.21 mi (426.82 km) |
| Bochum to Ochtrup | 50.01 mi (80.49 km) |
| Bochum to Odenthal | 31.29 mi (50.36 km) |
| Bochum to Oelde | 46.83 mi (75.36 km) |
| Bochum to Oelsnitz | 227.68 mi (366.41 km) |
| Bochum to Oer-Erkenschwick | 11.18 mi (17.99 km) |
| Bochum to Oerlinghausen | 70.55 mi (113.55 km) |
