| Herdecke to Octeville | 416.86 mi (670.87 km) |
| Herdecke to Oignies | 203.70 mi (327.82 km) |
| Herdecke to Oissel | 313.43 mi (504.41 km) |
| Herdecke to Olivet | 347.66 mi (559.51 km) |
| Herdecke to Ollioules | 575.54 mi (926.24 km) |
| Herdecke to Olonne-sur-Mer | 535.32 mi (861.52 km) |
| Herdecke to Oloron-Sainte-Marie | 679.83 mi (1,094.07 km) |
| Herdecke to Onet Village | 534.98 mi (860.97 km) |
| Herdecke to Onnaing | 181.16 mi (291.54 km) |
| Herdecke to Orange | 516.23 mi (830.78 km) |
| Herdecke to Orchies | 193.24 mi (310.99 km) |
| Herdecke to Orleans | 345.46 mi (555.96 km) |
| Herdecke to Orly | 289.10 mi (465.25 km) |
| Herdecke to Ormesson-sur-Marne | 282.21 mi (454.18 km) |
| Herdecke to Orsay | 298.23 mi (479.96 km) |
