| Simpelveld to Opwijk | 78.97 mi (127.10 km) |
| Simpelveld to Ostend | 135.86 mi (218.65 km) |
| Simpelveld to Oud-Heverlee | 57.45 mi (92.46 km) |
| Simpelveld to Oud-Turnhout | 54.77 mi (88.15 km) |
| Simpelveld to Oudenaarde | 103.99 mi (167.35 km) |
| Simpelveld to Oudenburg | 131.92 mi (212.31 km) |
| Simpelveld to Oupeye | 17.19 mi (27.67 km) |
| Simpelveld to Overijse | 63.40 mi (102.04 km) |
| Simpelveld to Overpelt | 36.17 mi (58.20 km) |
| Simpelveld to Paal | 38.05 mi (61.24 km) |
| Simpelveld to Peer | 30.97 mi (49.84 km) |
| Simpelveld to Pepinster | 19.81 mi (31.88 km) |
| Simpelveld to Peruwelz | 107.33 mi (172.74 km) |
| Simpelveld to Perwez | 53.10 mi (85.46 km) |
| Simpelveld to Philippeville | 76.68 mi (123.40 km) |
