| Grevenbroich to Opwijk | 104.81 mi (168.67 km) |
| Grevenbroich to Ostend | 159.22 mi (256.24 km) |
| Grevenbroich to Oud-Heverlee | 85.42 mi (137.48 km) |
| Grevenbroich to Oud-Turnhout | 71.22 mi (114.61 km) |
| Grevenbroich to Oudenaarde | 131.02 mi (210.85 km) |
| Grevenbroich to Oudenburg | 155.66 mi (250.51 km) |
| Grevenbroich to Oupeye | 48.82 mi (78.56 km) |
| Grevenbroich to Overijse | 91.89 mi (147.88 km) |
| Grevenbroich to Overpelt | 51.51 mi (82.90 km) |
| Grevenbroich to Paal | 61.52 mi (99.01 km) |
| Grevenbroich to Peer | 49.28 mi (79.31 km) |
| Grevenbroich to Pepinster | 49.30 mi (79.34 km) |
| Grevenbroich to Peruwelz | 136.99 mi (220.46 km) |
| Grevenbroich to Perwez | 83.70 mi (134.70 km) |
| Grevenbroich to Philippeville | 108.33 mi (174.34 km) |
