| Saint-Gely-du-Fesc to Opwijk | 502.93 mi (809.38 km) |
| Saint-Gely-du-Fesc to Ostend | 522.16 mi (840.33 km) |
| Saint-Gely-du-Fesc to Oud-Heverlee | 495.04 mi (796.69 km) |
| Saint-Gely-du-Fesc to Oud-Turnhout | 529.64 mi (852.37 km) |
| Saint-Gely-du-Fesc to Oudenaarde | 494.65 mi (796.06 km) |
| Saint-Gely-du-Fesc to Oudenburg | 518.95 mi (835.16 km) |
| Saint-Gely-du-Fesc to Oupeye | 492.33 mi (792.33 km) |
| Saint-Gely-du-Fesc to Overijse | 491.13 mi (790.39 km) |
| Saint-Gely-du-Fesc to Overpelt | 525.27 mi (845.35 km) |
| Saint-Gely-du-Fesc to Paal | 511.62 mi (823.37 km) |
| Saint-Gely-du-Fesc to Peer | 519.80 mi (836.53 km) |
| Saint-Gely-du-Fesc to Pepinster | 484.24 mi (779.31 km) |
| Saint-Gely-du-Fesc to Peruwelz | 471.64 mi (759.04 km) |
| Saint-Gely-du-Fesc to Perwez | 481.27 mi (774.54 km) |
| Saint-Gely-du-Fesc to Philippeville | 451.01 mi (725.82 km) |
