| Upminster to Opwijk | 174.79 mi (281.30 km) |
| Upminster to Ostend | 117.27 mi (188.72 km) |
| Upminster to Oud-Heverlee | 197.56 mi (317.94 km) |
| Upminster to Oud-Turnhout | 204.45 mi (329.03 km) |
| Upminster to Oudenaarde | 152.94 mi (246.13 km) |
| Upminster to Oudenburg | 121.32 mi (195.25 km) |
| Upminster to Oupeye | 240.94 mi (387.76 km) |
| Upminster to Overijse | 193.00 mi (310.61 km) |
| Upminster to Overpelt | 223.91 mi (360.35 km) |
| Upminster to Paal | 215.56 mi (346.90 km) |
| Upminster to Peer | 226.37 mi (364.31 km) |
| Upminster to Pepinster | 251.08 mi (404.08 km) |
| Upminster to Peruwelz | 161.57 mi (260.03 km) |
| Upminster to Perwez | 208.21 mi (335.09 km) |
| Upminster to Philippeville | 209.47 mi (337.11 km) |
