| Petite-Synthe to Octeville | 200.90 mi (323.31 km) |
| Petite-Synthe to Oignies | 47.43 mi (76.33 km) |
| Petite-Synthe to Oissel | 128.87 mi (207.39 km) |
| Petite-Synthe to Olivet | 219.22 mi (352.80 km) |
| Petite-Synthe to Ollioules | 568.81 mi (915.41 km) |
| Petite-Synthe to Olonne-sur-Mer | 362.35 mi (583.15 km) |
| Petite-Synthe to Oloron-Sainte-Marie | 558.42 mi (898.69 km) |
| Petite-Synthe to Onet Village | 460.12 mi (740.50 km) |
| Petite-Synthe to Onnaing | 69.97 mi (112.61 km) |
| Petite-Synthe to Orange | 489.21 mi (787.30 km) |
| Petite-Synthe to Orchies | 54.35 mi (87.47 km) |
| Petite-Synthe to Orleans | 216.53 mi (348.47 km) |
| Petite-Synthe to Orly | 157.49 mi (253.45 km) |
| Petite-Synthe to Ormesson-sur-Marne | 154.80 mi (249.13 km) |
| Petite-Synthe to Orsay | 160.81 mi (258.80 km) |
