| Chalfont Saint Peter to Opwijk | 209.48 mi (337.13 km) |
| Chalfont Saint Peter to Ostend | 152.04 mi (244.68 km) |
| Chalfont Saint Peter to Oud-Heverlee | 232.19 mi (373.68 km) |
| Chalfont Saint Peter to Oud-Turnhout | 239.24 mi (385.02 km) |
| Chalfont Saint Peter to Oudenaarde | 187.24 mi (301.34 km) |
| Chalfont Saint Peter to Oudenburg | 156.05 mi (251.15 km) |
| Chalfont Saint Peter to Oupeye | 275.62 mi (443.57 km) |
| Chalfont Saint Peter to Overijse | 227.54 mi (366.19 km) |
| Chalfont Saint Peter to Overpelt | 258.73 mi (416.38 km) |
| Chalfont Saint Peter to Paal | 250.38 mi (402.95 km) |
| Chalfont Saint Peter to Peer | 261.21 mi (420.37 km) |
| Chalfont Saint Peter to Pepinster | 285.66 mi (459.73 km) |
| Chalfont Saint Peter to Peruwelz | 194.86 mi (313.59 km) |
| Chalfont Saint Peter to Perwez | 242.59 mi (390.41 km) |
| Chalfont Saint Peter to Philippeville | 242.72 mi (390.62 km) |
