| Rehlingen-Siersburg to Opwijk | 156.15 mi (251.30 km) |
| Rehlingen-Siersburg to Ostend | 209.71 mi (337.49 km) |
| Rehlingen-Siersburg to Oud-Heverlee | 134.87 mi (217.05 km) |
| Rehlingen-Siersburg to Oud-Turnhout | 153.96 mi (247.77 km) |
| Rehlingen-Siersburg to Oudenaarde | 170.52 mi (274.43 km) |
| Rehlingen-Siersburg to Oudenburg | 205.16 mi (330.17 km) |
| Rehlingen-Siersburg to Oupeye | 103.34 mi (166.31 km) |
| Rehlingen-Siersburg to Overijse | 136.38 mi (219.49 km) |
| Rehlingen-Siersburg to Overpelt | 139.31 mi (224.19 km) |
| Rehlingen-Siersburg to Paal | 133.25 mi (214.45 km) |
| Rehlingen-Siersburg to Peer | 133.36 mi (214.63 km) |
| Rehlingen-Siersburg to Pepinster | 91.21 mi (146.79 km) |
| Rehlingen-Siersburg to Peruwelz | 158.84 mi (255.63 km) |
| Rehlingen-Siersburg to Perwez | 119.89 mi (192.95 km) |
| Rehlingen-Siersburg to Philippeville | 110.98 mi (178.60 km) |
