| Portet-sur-Garonne to Opwijk | 530.52 mi (853.79 km) |
| Portet-sur-Garonne to Ostend | 536.94 mi (864.13 km) |
| Portet-sur-Garonne to Oud-Heverlee | 527.73 mi (849.30 km) |
| Portet-sur-Garonne to Oud-Turnhout | 563.76 mi (907.28 km) |
| Portet-sur-Garonne to Oudenaarde | 516.63 mi (831.44 km) |
| Portet-sur-Garonne to Oudenburg | 534.55 mi (860.27 km) |
| Portet-sur-Garonne to Oupeye | 534.78 mi (860.65 km) |
| Portet-sur-Garonne to Overijse | 522.66 mi (841.14 km) |
| Portet-sur-Garonne to Overpelt | 563.59 mi (907.01 km) |
| Portet-sur-Garonne to Paal | 548.39 mi (882.55 km) |
| Portet-sur-Garonne to Peer | 558.76 mi (899.24 km) |
| Portet-sur-Garonne to Pepinster | 528.96 mi (851.27 km) |
| Portet-sur-Garonne to Peruwelz | 494.00 mi (795.01 km) |
| Portet-sur-Garonne to Perwez | 516.12 mi (830.62 km) |
| Portet-sur-Garonne to Philippeville | 484.61 mi (779.91 km) |
