| Niederzier to Opwijk | 99.61 mi (160.31 km) |
| Niederzier to Ostend | 155.85 mi (250.82 km) |
| Niederzier to Oud-Heverlee | 78.58 mi (126.46 km) |
| Niederzier to Oud-Turnhout | 70.99 mi (114.25 km) |
| Niederzier to Oudenaarde | 125.02 mi (201.20 km) |
| Niederzier to Oudenburg | 152.04 mi (244.68 km) |
| Niederzier to Oupeye | 37.94 mi (61.06 km) |
| Niederzier to Overijse | 84.65 mi (136.23 km) |
| Niederzier to Overpelt | 51.10 mi (82.24 km) |
| Niederzier to Paal | 57.33 mi (92.27 km) |
| Niederzier to Peer | 47.30 mi (76.13 km) |
| Niederzier to Pepinster | 35.86 mi (57.72 km) |
| Niederzier to Peruwelz | 128.69 mi (207.11 km) |
| Niederzier to Perwez | 74.38 mi (119.71 km) |
| Niederzier to Philippeville | 96.49 mi (155.28 km) |
