| Sluis to Octeville | 249.76 mi (401.95 km) |
| Sluis to Oignies | 60.45 mi (97.28 km) |
| Sluis to Oissel | 169.41 mi (272.64 km) |
| Sluis to Olivet | 247.10 mi (397.67 km) |
| Sluis to Ollioules | 576.02 mi (927.01 km) |
| Sluis to Olonne-sur-Mer | 404.23 mi (650.54 km) |
| Sluis to Oloron-Sainte-Marie | 590.85 mi (950.88 km) |
| Sluis to Onet Village | 481.09 mi (774.24 km) |
| Sluis to Onnaing | 64.27 mi (103.43 km) |
| Sluis to Orange | 499.77 mi (804.30 km) |
| Sluis to Orchies | 57.93 mi (93.22 km) |
| Sluis to Orleans | 244.42 mi (393.36 km) |
| Sluis to Orly | 182.58 mi (293.84 km) |
| Sluis to Ormesson-sur-Marne | 178.30 mi (286.94 km) |
| Sluis to Orsay | 188.03 mi (302.61 km) |
