| Zelzate to Oignies | 61.96 mi (99.72 km) |
| Zelzate to Oissel | 175.95 mi (283.16 km) |
| Zelzate to Olivet | 245.97 mi (395.86 km) |
| Zelzate to Ollioules | 564.98 mi (909.25 km) |
| Zelzate to Olonne-sur-Mer | 410.09 mi (659.97 km) |
| Zelzate to Oloron-Sainte-Marie | 590.57 mi (950.43 km) |
| Zelzate to Onet Village | 475.59 mi (765.40 km) |
| Zelzate to Onnaing | 56.92 mi (91.61 km) |
| Zelzate to Orange | 490.09 mi (788.72 km) |
| Zelzate to Orchies | 55.99 mi (90.11 km) |
| Zelzate to Orleans | 243.33 mi (391.61 km) |
| Zelzate to Orly | 181.10 mi (291.46 km) |
| Zelzate to Ormesson-sur-Marne | 176.20 mi (283.56 km) |
| Zelzate to Orsay | 187.41 mi (301.61 km) |
| Zelzate to Orthez | 574.21 mi (924.10 km) |
