| Ritterhude to Opwijk | 247.41 mi (398.18 km) |
| Ritterhude to Ostend | 281.77 mi (453.46 km) |
| Ritterhude to Oud-Heverlee | 238.05 mi (383.11 km) |
| Ritterhude to Oud-Turnhout | 205.32 mi (330.43 km) |
| Ritterhude to Oudenaarde | 272.21 mi (438.07 km) |
| Ritterhude to Oudenburg | 280.32 mi (451.13 km) |
| Ritterhude to Oupeye | 216.54 mi (348.48 km) |
| Ritterhude to Overijse | 244.63 mi (393.69 km) |
| Ritterhude to Overpelt | 196.27 mi (315.86 km) |
| Ritterhude to Paal | 212.43 mi (341.87 km) |
| Ritterhude to Peer | 199.32 mi (320.77 km) |
| Ritterhude to Pepinster | 220.18 mi (354.34 km) |
| Ritterhude to Peruwelz | 287.61 mi (462.87 km) |
| Ritterhude to Perwez | 244.03 mi (392.73 km) |
| Ritterhude to Philippeville | 273.86 mi (440.73 km) |
