| Mexborough to Oberkirch | 531.67 mi (855.64 km) |
| Mexborough to Obernburg am Main | 512.57 mi (824.90 km) |
| Mexborough to Obernkirchen | 441.52 mi (710.55 km) |
| Mexborough to Oberschleissheim | 665.88 mi (1,071.63 km) |
| Mexborough to Oberstdorf | 658.71 mi (1,060.09 km) |
| Mexborough to Obertraubling | 659.37 mi (1,061.15 km) |
| Mexborough to Obertshausen | 492.54 mi (792.67 km) |
| Mexborough to Oberursel | 477.90 mi (769.10 km) |
| Mexborough to Ochsenfurt | 554.32 mi (892.09 km) |
| Mexborough to Ochsenhausen | 616.31 mi (991.85 km) |
| Mexborough to Ochtrup | 364.41 mi (586.47 km) |
| Mexborough to Odenthal | 393.60 mi (633.44 km) |
| Mexborough to Oelde | 411.33 mi (661.97 km) |
| Mexborough to Oelsnitz | 609.84 mi (981.44 km) |
| Mexborough to Oer-Erkenschwick | 380.35 mi (612.12 km) |
