| Berkhampstead to Opwijk | 211.80 mi (340.86 km) |
| Berkhampstead to Ostend | 154.14 mi (248.07 km) |
| Berkhampstead to Oud-Heverlee | 234.65 mi (377.64 km) |
| Berkhampstead to Oud-Turnhout | 240.13 mi (386.45 km) |
| Berkhampstead to Oudenaarde | 190.34 mi (306.33 km) |
| Berkhampstead to Oudenburg | 158.29 mi (254.75 km) |
| Berkhampstead to Oupeye | 277.93 mi (447.28 km) |
| Berkhampstead to Overijse | 230.22 mi (370.50 km) |
| Berkhampstead to Overpelt | 259.78 mi (418.08 km) |
| Berkhampstead to Paal | 252.02 mi (405.58 km) |
| Berkhampstead to Peer | 262.48 mi (422.42 km) |
| Berkhampstead to Pepinster | 288.22 mi (463.85 km) |
| Berkhampstead to Peruwelz | 199.07 mi (320.37 km) |
| Berkhampstead to Perwez | 245.55 mi (395.18 km) |
| Berkhampstead to Philippeville | 246.97 mi (397.46 km) |
