| Keller to Opwijk | 4,938.30 mi (7,947.43 km) |
| Keller to Ostend | 4,881.72 mi (7,856.38 km) |
| Keller to Oud-Heverlee | 4,961.15 mi (7,984.20 km) |
| Keller to Oud-Turnhout | 4,956.23 mi (7,976.27 km) |
| Keller to Oudenaarde | 4,920.20 mi (7,918.29 km) |
| Keller to Oudenburg | 4,886.20 mi (7,863.58 km) |
| Keller to Oupeye | 5,002.29 mi (8,050.41 km) |
| Keller to Overijse | 4,957.85 mi (7,978.89 km) |
| Keller to Overpelt | 4,975.88 mi (8,007.91 km) |
| Keller to Paal | 4,973.00 mi (8,003.26 km) |
| Keller to Peer | 4,980.21 mi (8,014.87 km) |
| Keller to Pepinster | 5,013.85 mi (8,069.01 km) |
| Keller to Peruwelz | 4,930.90 mi (7,935.52 km) |
| Keller to Perwez | 4,974.04 mi (8,004.94 km) |
| Keller to Philippeville | 4,978.75 mi (8,012.52 km) |
