| Westminster to Opwijk | 190.34 mi (306.33 km) |
| Westminster to Ostend | 133.08 mi (214.18 km) |
| Westminster to Oud-Heverlee | 212.98 mi (342.75 km) |
| Westminster to Oud-Turnhout | 220.91 mi (355.52 km) |
| Westminster to Oudenaarde | 167.81 mi (270.07 km) |
| Westminster to Oudenburg | 137.02 mi (220.51 km) |
| Westminster to Oupeye | 256.45 mi (412.72 km) |
| Westminster to Overijse | 208.23 mi (335.12 km) |
| Westminster to Overpelt | 240.27 mi (386.67 km) |
| Westminster to Paal | 231.57 mi (372.68 km) |
| Westminster to Peer | 242.60 mi (390.43 km) |
| Westminster to Pepinster | 266.38 mi (428.69 km) |
| Westminster to Peruwelz | 175.20 mi (281.96 km) |
| Westminster to Perwez | 223.18 mi (359.17 km) |
| Westminster to Philippeville | 223.06 mi (358.98 km) |
