| Nieuwpoort to Oignies | 45.99 mi (74.01 km) |
| Nieuwpoort to Oissel | 142.86 mi (229.91 km) |
| Nieuwpoort to Olivet | 227.95 mi (366.85 km) |
| Nieuwpoort to Ollioules | 569.94 mi (917.23 km) |
| Nieuwpoort to Olonne-sur-Mer | 377.31 mi (607.23 km) |
| Nieuwpoort to Oloron-Sainte-Marie | 569.50 mi (916.52 km) |
| Nieuwpoort to Onet Village | 466.51 mi (750.78 km) |
| Nieuwpoort to Onnaing | 62.54 mi (100.64 km) |
| Nieuwpoort to Orange | 491.55 mi (791.08 km) |
| Nieuwpoort to Orchies | 49.33 mi (79.39 km) |
| Nieuwpoort to Orleans | 225.26 mi (362.52 km) |
| Nieuwpoort to Orly | 164.71 mi (265.08 km) |
| Nieuwpoort to Ormesson-sur-Marne | 161.32 mi (259.63 km) |
| Nieuwpoort to Orsay | 168.97 mi (271.93 km) |
| Nieuwpoort to Orthez | 552.13 mi (888.56 km) |
