| Guilherand to Opwijk | 418.01 mi (672.73 km) |
| Guilherand to Ostend | 443.92 mi (714.42 km) |
| Guilherand to Oud-Heverlee | 407.69 mi (656.11 km) |
| Guilherand to Oud-Turnhout | 441.00 mi (709.72 km) |
| Guilherand to Oudenaarde | 412.96 mi (664.59 km) |
| Guilherand to Oudenburg | 440.31 mi (708.61 km) |
| Guilherand to Oupeye | 400.52 mi (644.58 km) |
| Guilherand to Overijse | 404.43 mi (650.86 km) |
| Guilherand to Overpelt | 434.78 mi (699.71 km) |
| Guilherand to Paal | 422.03 mi (679.18 km) |
| Guilherand to Peer | 429.10 mi (690.57 km) |
| Guilherand to Pepinster | 391.60 mi (630.22 km) |
| Guilherand to Peruwelz | 390.32 mi (628.17 km) |
| Guilherand to Perwez | 393.13 mi (632.68 km) |
| Guilherand to Philippeville | 364.13 mi (586.01 km) |
