| Oberhausen-Rheinhausen to Octeville | 455.35 mi (732.82 km) |
| Oberhausen-Rheinhausen to Oignies | 258.36 mi (415.79 km) |
| Oberhausen-Rheinhausen to Oissel | 333.03 mi (535.96 km) |
| Oberhausen-Rheinhausen to Olivet | 316.05 mi (508.63 km) |
| Oberhausen-Rheinhausen to Ollioules | 441.27 mi (710.16 km) |
| Oberhausen-Rheinhausen to Olonne-sur-Mer | 510.59 mi (821.71 km) |
| Oberhausen-Rheinhausen to Oloron-Sainte-Marie | 602.97 mi (970.39 km) |
| Oberhausen-Rheinhausen to Onet Village | 437.89 mi (704.72 km) |
| Oberhausen-Rheinhausen to Onnaing | 231.28 mi (372.21 km) |
| Oberhausen-Rheinhausen to Orange | 394.33 mi (634.61 km) |
| Oberhausen-Rheinhausen to Orchies | 247.95 mi (399.03 km) |
| Oberhausen-Rheinhausen to Orleans | 314.77 mi (506.57 km) |
| Oberhausen-Rheinhausen to Orly | 278.36 mi (447.98 km) |
| Oberhausen-Rheinhausen to Ormesson-sur-Marne | 271.35 mi (436.70 km) |
| Oberhausen-Rheinhausen to Orsay | 288.13 mi (463.69 km) |
