| Ridderkerk to Octeville | 313.61 mi (504.70 km) |
| Ridderkerk to Oignies | 119.02 mi (191.54 km) |
| Ridderkerk to Oissel | 232.55 mi (374.25 km) |
| Ridderkerk to Olivet | 301.51 mi (485.24 km) |
| Ridderkerk to Ollioules | 605.78 mi (974.90 km) |
| Ridderkerk to Olonne-sur-Mer | 466.99 mi (751.54 km) |
| Ridderkerk to Oloron-Sainte-Marie | 646.16 mi (1,039.89 km) |
| Ridderkerk to Onet Village | 526.42 mi (847.19 km) |
| Ridderkerk to Onnaing | 111.03 mi (178.69 km) |
| Ridderkerk to Orange | 534.07 mi (859.50 km) |
| Ridderkerk to Orchies | 112.69 mi (181.36 km) |
| Ridderkerk to Orleans | 298.90 mi (481.03 km) |
| Ridderkerk to Orly | 236.70 mi (380.94 km) |
| Ridderkerk to Ormesson-sur-Marne | 231.46 mi (372.50 km) |
| Ridderkerk to Orsay | 243.43 mi (391.76 km) |
