| Grossostheim to Opwijk | 227.44 mi (366.03 km) |
| Grossostheim to Ostend | 285.11 mi (458.83 km) |
| Grossostheim to Oud-Heverlee | 204.62 mi (329.31 km) |
| Grossostheim to Oud-Turnhout | 204.08 mi (328.43 km) |
| Grossostheim to Oudenaarde | 249.97 mi (402.29 km) |
| Grossostheim to Oudenburg | 280.94 mi (452.14 km) |
| Grossostheim to Oupeye | 161.33 mi (259.63 km) |
| Grossostheim to Overijse | 209.31 mi (336.85 km) |
| Grossostheim to Overpelt | 184.26 mi (296.53 km) |
| Grossostheim to Paal | 188.59 mi (303.51 km) |
| Grossostheim to Peer | 180.19 mi (290.00 km) |
| Grossostheim to Pepinster | 151.16 mi (243.26 km) |
| Grossostheim to Peruwelz | 246.61 mi (396.89 km) |
| Grossostheim to Perwez | 194.70 mi (313.34 km) |
| Grossostheim to Philippeville | 202.01 mi (325.10 km) |
