| Erkelenz to Octeville | 364.83 mi (587.14 km) |
| Erkelenz to Oignies | 151.25 mi (243.41 km) |
| Erkelenz to Oissel | 260.41 mi (419.09 km) |
| Erkelenz to Olivet | 297.87 mi (479.37 km) |
| Erkelenz to Ollioules | 549.31 mi (884.03 km) |
| Erkelenz to Olonne-sur-Mer | 483.45 mi (778.04 km) |
| Erkelenz to Oloron-Sainte-Marie | 634.17 mi (1,020.60 km) |
| Erkelenz to Onet Village | 495.19 mi (796.93 km) |
| Erkelenz to Onnaing | 128.22 mi (206.35 km) |
| Erkelenz to Orange | 484.93 mi (780.42 km) |
| Erkelenz to Orchies | 140.65 mi (226.36 km) |
| Erkelenz to Orleans | 295.58 mi (475.69 km) |
| Erkelenz to Orly | 237.86 mi (382.80 km) |
| Erkelenz to Ormesson-sur-Marne | 231.10 mi (371.93 km) |
| Erkelenz to Orsay | 246.80 mi (397.18 km) |
