| Granite City to Opwijk | 4,374.72 mi (7,040.44 km) |
| Granite City to Ostend | 4,318.08 mi (6,949.28 km) |
| Granite City to Oud-Heverlee | 4,397.59 mi (7,077.24 km) |
| Granite City to Oud-Turnhout | 4,392.91 mi (7,069.70 km) |
| Granite City to Oudenaarde | 4,356.51 mi (7,011.13 km) |
| Granite City to Oudenburg | 4,322.55 mi (6,956.48 km) |
| Granite City to Oupeye | 4,438.82 mi (7,143.59 km) |
| Granite City to Overijse | 4,394.25 mi (7,071.87 km) |
| Granite City to Overpelt | 4,412.59 mi (7,101.37 km) |
| Granite City to Paal | 4,409.59 mi (7,096.54 km) |
| Granite City to Peer | 4,416.88 mi (7,108.29 km) |
| Granite City to Pepinster | 4,450.35 mi (7,162.14 km) |
| Granite City to Peruwelz | 4,367.12 mi (7,028.20 km) |
| Granite City to Perwez | 4,410.42 mi (7,097.89 km) |
| Granite City to Philippeville | 4,414.98 mi (7,105.22 km) |
