| Mexborough to Oerlinghausen | 429.14 mi (690.63 km) |
| Mexborough to Oestrich-Winkel | 464.36 mi (747.32 km) |
| Mexborough to Offenburg | 529.93 mi (852.85 km) |
| Mexborough to Oftersheim | 511.18 mi (822.66 km) |
| Mexborough to Ohrdruf | 540.86 mi (870.43 km) |
| Mexborough to Ohringen | 551.17 mi (887.03 km) |
| Mexborough to Olbernhau | 649.36 mi (1,045.05 km) |
| Mexborough to Olching | 658.96 mi (1,060.50 km) |
| Mexborough to Oldenburg | 392.42 mi (631.54 km) |
| Mexborough to Oldenburg in Holstein | 497.74 mi (801.03 km) |
| Mexborough to Olfen | 383.62 mi (617.37 km) |
| Mexborough to Olpe | 421.59 mi (678.48 km) |
| Mexborough to Olsberg | 437.03 mi (703.33 km) |
| Mexborough to Oranienburg | 603.12 mi (970.63 km) |
| Mexborough to Ortenberg | 490.49 mi (789.37 km) |
