| Mery-sur-Oise to Opwijk | 158.58 mi (255.20 km) |
| Mery-sur-Oise to Ostend | 152.88 mi (246.03 km) |
| Mery-sur-Oise to Oud-Heverlee | 164.64 mi (264.96 km) |
| Mery-sur-Oise to Oud-Turnhout | 198.82 mi (319.97 km) |
| Mery-sur-Oise to Oudenaarde | 138.50 mi (222.89 km) |
| Mery-sur-Oise to Oudenburg | 150.82 mi (242.73 km) |
| Mery-sur-Oise to Oupeye | 191.26 mi (307.81 km) |
| Mery-sur-Oise to Overijse | 158.15 mi (254.52 km) |
| Mery-sur-Oise to Overpelt | 206.34 mi (332.08 km) |
| Mery-sur-Oise to Paal | 190.20 mi (306.09 km) |
| Mery-sur-Oise to Peer | 203.45 mi (327.43 km) |
| Mery-sur-Oise to Pepinster | 192.27 mi (309.43 km) |
| Mery-sur-Oise to Peruwelz | 118.16 mi (190.16 km) |
| Mery-sur-Oise to Perwez | 159.17 mi (256.17 km) |
| Mery-sur-Oise to Philippeville | 131.72 mi (211.98 km) |
