| Nierstein to Opwijk | 197.94 mi (318.56 km) |
| Nierstein to Ostend | 255.60 mi (411.34 km) |
| Nierstein to Oud-Heverlee | 174.98 mi (281.60 km) |
| Nierstein to Oud-Turnhout | 177.86 mi (286.24 km) |
| Nierstein to Oudenaarde | 219.49 mi (353.24 km) |
| Nierstein to Oudenburg | 251.33 mi (404.48 km) |
| Nierstein to Oupeye | 132.30 mi (212.92 km) |
| Nierstein to Overijse | 179.27 mi (288.50 km) |
| Nierstein to Overpelt | 158.45 mi (255.00 km) |
| Nierstein to Paal | 160.96 mi (259.04 km) |
| Nierstein to Peer | 153.88 mi (247.64 km) |
| Nierstein to Pepinster | 121.41 mi (195.38 km) |
| Nierstein to Peruwelz | 214.96 mi (345.94 km) |
| Nierstein to Perwez | 164.12 mi (264.13 km) |
| Nierstein to Philippeville | 169.62 mi (272.97 km) |
