| Krefeld to Octeville | 379.49 mi (610.72 km) |
| Krefeld to Oignies | 166.73 mi (268.32 km) |
| Krefeld to Oissel | 277.81 mi (447.09 km) |
| Krefeld to Olivet | 317.87 mi (511.57 km) |
| Krefeld to Ollioules | 567.14 mi (912.73 km) |
| Krefeld to Olonne-sur-Mer | 502.57 mi (808.81 km) |
| Krefeld to Oloron-Sainte-Marie | 654.55 mi (1,053.40 km) |
| Krefeld to Onet Village | 515.27 mi (829.24 km) |
| Krefeld to Onnaing | 145.00 mi (233.36 km) |
| Krefeld to Orange | 503.75 mi (810.70 km) |
| Krefeld to Orchies | 156.43 mi (251.75 km) |
| Krefeld to Orleans | 315.57 mi (507.85 km) |
| Krefeld to Orly | 257.44 mi (414.31 km) |
| Krefeld to Ormesson-sur-Marne | 250.75 mi (403.54 km) |
| Krefeld to Orsay | 266.28 mi (428.54 km) |
