| Fos-sur-Mer to Opwijk | 520.27 mi (837.29 km) |
| Fos-sur-Mer to Ostend | 545.19 mi (877.40 km) |
| Fos-sur-Mer to Oud-Heverlee | 510.00 mi (820.76 km) |
| Fos-sur-Mer to Oud-Turnhout | 543.24 mi (874.25 km) |
| Fos-sur-Mer to Oudenaarde | 514.85 mi (828.57 km) |
| Fos-sur-Mer to Oudenburg | 541.67 mi (871.73 km) |
| Fos-sur-Mer to Oupeye | 502.27 mi (808.32 km) |
| Fos-sur-Mer to Overijse | 506.74 mi (815.52 km) |
| Fos-sur-Mer to Overpelt | 536.78 mi (863.86 km) |
| Fos-sur-Mer to Paal | 524.17 mi (843.57 km) |
| Fos-sur-Mer to Peer | 531.06 mi (854.66 km) |
| Fos-sur-Mer to Pepinster | 493.12 mi (793.60 km) |
| Fos-sur-Mer to Peruwelz | 492.13 mi (792.00 km) |
| Fos-sur-Mer to Perwez | 495.42 mi (797.29 km) |
| Fos-sur-Mer to Philippeville | 466.45 mi (750.67 km) |
