| Berck-sur-Mer to Oignies | 61.79 mi (99.43 km) |
| Berck-sur-Mer to Oissel | 76.99 mi (123.90 km) |
| Berck-sur-Mer to Olivet | 176.35 mi (283.81 km) |
| Berck-sur-Mer to Ollioules | 540.84 mi (870.40 km) |
| Berck-sur-Mer to Olonne-sur-Mer | 308.71 mi (496.82 km) |
| Berck-sur-Mer to Oloron-Sainte-Marie | 509.12 mi (819.35 km) |
| Berck-sur-Mer to Onet Village | 420.12 mi (676.11 km) |
| Berck-sur-Mer to Onnaing | 88.33 mi (142.15 km) |
| Berck-sur-Mer to Orange | 458.60 mi (738.04 km) |
| Berck-sur-Mer to Orchies | 72.81 mi (117.18 km) |
| Berck-sur-Mer to Orleans | 173.72 mi (279.58 km) |
| Berck-sur-Mer to Orly | 120.45 mi (193.85 km) |
| Berck-sur-Mer to Ormesson-sur-Marne | 119.83 mi (192.85 km) |
| Berck-sur-Mer to Orsay | 121.13 mi (194.94 km) |
| Berck-sur-Mer to Orthez | 490.90 mi (790.02 km) |
