| Guildford to Opwijk | 207.05 mi (333.21 km) |
| Guildford to Ostend | 150.97 mi (242.96 km) |
| Guildford to Oud-Heverlee | 229.19 mi (368.85 km) |
| Guildford to Oud-Turnhout | 240.04 mi (386.31 km) |
| Guildford to Oudenaarde | 183.09 mi (294.66 km) |
| Guildford to Oudenburg | 154.57 mi (248.75 km) |
| Guildford to Oupeye | 272.70 mi (438.87 km) |
| Guildford to Overijse | 224.02 mi (360.52 km) |
| Guildford to Overpelt | 258.98 mi (416.79 km) |
| Guildford to Paal | 249.29 mi (401.19 km) |
| Guildford to Peer | 260.91 mi (419.90 km) |
| Guildford to Pepinster | 282.03 mi (453.89 km) |
| Guildford to Peruwelz | 187.76 mi (302.17 km) |
| Guildford to Perwez | 238.24 mi (383.42 km) |
| Guildford to Philippeville | 235.10 mi (378.36 km) |
