| Casamassima to Opwijk | 921.00 mi (1,482.21 km) |
| Casamassima to Ostend | 973.50 mi (1,566.70 km) |
| Casamassima to Oud-Heverlee | 899.48 mi (1,447.57 km) |
| Casamassima to Oud-Turnhout | 913.84 mi (1,470.69 km) |
| Casamassima to Oudenaarde | 934.15 mi (1,503.37 km) |
| Casamassima to Oudenburg | 968.94 mi (1,559.37 km) |
| Casamassima to Oupeye | 863.54 mi (1,389.74 km) |
| Casamassima to Overijse | 901.22 mi (1,450.38 km) |
| Casamassima to Overpelt | 896.08 mi (1,442.09 km) |
| Casamassima to Paal | 894.25 mi (1,439.15 km) |
| Casamassima to Peer | 890.71 mi (1,433.46 km) |
| Casamassima to Pepinster | 851.20 mi (1,369.87 km) |
| Casamassima to Peruwelz | 919.48 mi (1,479.76 km) |
| Casamassima to Perwez | 884.72 mi (1,423.81 km) |
| Casamassima to Philippeville | 873.08 mi (1,405.09 km) |
