| Opmeer to Octeville | 355.71 mi (572.45 km) |
| Opmeer to Oignies | 175.52 mi (282.47 km) |
| Opmeer to Oissel | 286.19 mi (460.59 km) |
| Opmeer to Olivet | 360.16 mi (579.63 km) |
| Opmeer to Ollioules | 661.86 mi (1,065.17 km) |
| Opmeer to Olonne-sur-Mer | 520.99 mi (838.46 km) |
| Opmeer to Oloron-Sainte-Marie | 704.81 mi (1,134.29 km) |
| Opmeer to Onet Village | 585.77 mi (942.71 km) |
| Opmeer to Onnaing | 169.98 mi (273.56 km) |
| Opmeer to Orange | 591.59 mi (952.07 km) |
| Opmeer to Orchies | 170.29 mi (274.05 km) |
| Opmeer to Orleans | 357.53 mi (575.39 km) |
| Opmeer to Orly | 295.29 mi (475.23 km) |
| Opmeer to Ormesson-sur-Marne | 290.23 mi (467.08 km) |
| Opmeer to Orsay | 301.72 mi (485.58 km) |
