| Bierbeek to Oestrich-Winkel | 153.54 mi (247.09 km) |
| Bierbeek to Offenburg | 216.30 mi (348.10 km) |
| Bierbeek to Oftersheim | 197.05 mi (317.13 km) |
| Bierbeek to Ohrdruf | 260.29 mi (418.90 km) |
| Bierbeek to Ohringen | 238.46 mi (383.77 km) |
| Bierbeek to Olbernhau | 374.46 mi (602.64 km) |
| Bierbeek to Olching | 345.40 mi (555.86 km) |
| Bierbeek to Oldenburg | 216.75 mi (348.82 km) |
| Bierbeek to Oldenburg in Holstein | 351.00 mi (564.87 km) |
| Bierbeek to Olfen | 128.51 mi (206.81 km) |
| Bierbeek to Olpe | 134.15 mi (215.89 km) |
| Bierbeek to Olsberg | 165.17 mi (265.81 km) |
| Bierbeek to Oranienburg | 385.25 mi (620.00 km) |
| Bierbeek to Ortenberg | 190.94 mi (307.29 km) |
| Bierbeek to Oschatz | 363.37 mi (584.79 km) |
