| Petite-Synthe to Opwijk | 79.70 mi (128.26 km) |
| Petite-Synthe to Ostend | 28.28 mi (45.52 km) |
| Petite-Synthe to Oud-Heverlee | 101.61 mi (163.53 km) |
| Petite-Synthe to Oud-Turnhout | 115.74 mi (186.27 km) |
| Petite-Synthe to Oudenaarde | 55.61 mi (89.49 km) |
| Petite-Synthe to Oudenburg | 30.18 mi (48.57 km) |
| Petite-Synthe to Oupeye | 145.11 mi (233.53 km) |
| Petite-Synthe to Overijse | 96.44 mi (155.20 km) |
| Petite-Synthe to Overpelt | 133.54 mi (214.91 km) |
| Petite-Synthe to Paal | 122.53 mi (197.20 km) |
| Petite-Synthe to Peer | 134.80 mi (216.95 km) |
| Petite-Synthe to Pepinster | 154.52 mi (248.67 km) |
| Petite-Synthe to Peruwelz | 64.15 mi (103.24 km) |
| Petite-Synthe to Perwez | 110.94 mi (178.54 km) |
| Petite-Synthe to Philippeville | 111.86 mi (180.03 km) |
