| Ottweiler to Opwijk | 172.18 mi (277.10 km) |
| Ottweiler to Ostend | 227.20 mi (365.64 km) |
| Ottweiler to Oud-Heverlee | 150.13 mi (241.62 km) |
| Ottweiler to Oud-Turnhout | 165.58 mi (266.48 km) |
| Ottweiler to Oudenaarde | 188.34 mi (303.10 km) |
| Ottweiler to Oudenburg | 222.67 mi (358.36 km) |
| Ottweiler to Oupeye | 114.73 mi (184.64 km) |
| Ottweiler to Overijse | 152.35 mi (245.19 km) |
| Ottweiler to Overpelt | 149.34 mi (240.34 km) |
| Ottweiler to Paal | 145.35 mi (233.91 km) |
| Ottweiler to Peer | 143.58 mi (231.07 km) |
| Ottweiler to Pepinster | 102.34 mi (164.70 km) |
| Ottweiler to Peruwelz | 178.03 mi (286.51 km) |
| Ottweiler to Perwez | 135.85 mi (218.63 km) |
| Ottweiler to Philippeville | 130.15 mi (209.46 km) |
