| Silopi to Opwijk | 2,091.52 mi (3,365.98 km) |
| Silopi to Ostend | 2,148.83 mi (3,458.21 km) |
| Silopi to Oud-Heverlee | 2,069.00 mi (3,329.73 km) |
| Silopi to Oud-Turnhout | 2,062.96 mi (3,320.02 km) |
| Silopi to Oudenaarde | 2,114.81 mi (3,403.45 km) |
| Silopi to Oudenburg | 2,144.84 mi (3,451.79 km) |
| Silopi to Oupeye | 2,025.47 mi (3,259.69 km) |
| Silopi to Overijse | 2,073.97 mi (3,337.73 km) |
| Silopi to Overpelt | 2,043.13 mi (3,288.11 km) |
| Silopi to Paal | 2,050.60 mi (3,300.12 km) |
| Silopi to Peer | 2,040.22 mi (3,283.42 km) |
| Silopi to Pepinster | 2,015.87 mi (3,244.23 km) |
| Silopi to Peruwelz | 2,111.18 mi (3,397.62 km) |
| Silopi to Perwez | 2,059.63 mi (3,314.65 km) |
| Silopi to Philippeville | 2,065.23 mi (3,323.67 km) |
