| Mechernich to Opwijk | 110.69 mi (178.14 km) |
| Mechernich to Ostend | 168.15 mi (270.61 km) |
| Mechernich to Oud-Heverlee | 88.24 mi (142.02 km) |
| Mechernich to Oud-Turnhout | 87.82 mi (141.34 km) |
| Mechernich to Oudenaarde | 134.51 mi (216.47 km) |
| Mechernich to Oudenburg | 164.09 mi (264.07 km) |
| Mechernich to Oupeye | 44.74 mi (72.00 km) |
| Mechernich to Overijse | 93.51 mi (150.48 km) |
| Mechernich to Overpelt | 68.57 mi (110.36 km) |
| Mechernich to Paal | 71.26 mi (114.69 km) |
| Mechernich to Peer | 63.85 mi (102.76 km) |
| Mechernich to Pepinster | 36.63 mi (58.95 km) |
| Mechernich to Peruwelz | 134.72 mi (216.82 km) |
| Mechernich to Perwez | 80.47 mi (129.50 km) |
| Mechernich to Philippeville | 96.52 mi (155.34 km) |
