| Saint-Pol-sur-Mer to Opwijk | 80.10 mi (128.92 km) |
| Saint-Pol-sur-Mer to Ostend | 28.34 mi (45.61 km) |
| Saint-Pol-sur-Mer to Oud-Heverlee | 102.06 mi (164.26 km) |
| Saint-Pol-sur-Mer to Oud-Turnhout | 116.02 mi (186.71 km) |
| Saint-Pol-sur-Mer to Oudenaarde | 56.10 mi (90.29 km) |
| Saint-Pol-sur-Mer to Oudenburg | 30.34 mi (48.82 km) |
| Saint-Pol-sur-Mer to Oupeye | 145.57 mi (234.27 km) |
| Saint-Pol-sur-Mer to Overijse | 96.91 mi (155.97 km) |
| Saint-Pol-sur-Mer to Overpelt | 133.86 mi (215.42 km) |
| Saint-Pol-sur-Mer to Paal | 122.91 mi (197.80 km) |
| Saint-Pol-sur-Mer to Peer | 135.15 mi (217.50 km) |
| Saint-Pol-sur-Mer to Pepinster | 155.00 mi (249.45 km) |
| Saint-Pol-sur-Mer to Peruwelz | 64.78 mi (104.26 km) |
| Saint-Pol-sur-Mer to Perwez | 111.45 mi (179.36 km) |
| Saint-Pol-sur-Mer to Philippeville | 112.48 mi (181.02 km) |
