| Sliema to Opwijk | 1,159.30 mi (1,865.72 km) |
| Sliema to Ostend | 1,203.26 mi (1,936.46 km) |
| Sliema to Oud-Heverlee | 1,140.87 mi (1,836.06 km) |
| Sliema to Oud-Turnhout | 1,163.75 mi (1,872.87 km) |
| Sliema to Oudenaarde | 1,165.49 mi (1,875.68 km) |
| Sliema to Oudenburg | 1,198.90 mi (1,929.44 km) |
| Sliema to Oupeye | 1,113.26 mi (1,791.62 km) |
| Sliema to Overijse | 1,140.72 mi (1,835.80 km) |
| Sliema to Overpelt | 1,149.07 mi (1,849.26 km) |
| Sliema to Paal | 1,142.95 mi (1,839.40 km) |
| Sliema to Peer | 1,143.17 mi (1,839.76 km) |
| Sliema to Pepinster | 1,101.10 mi (1,772.06 km) |
| Sliema to Peruwelz | 1,146.39 mi (1,844.94 km) |
| Sliema to Perwez | 1,125.09 mi (1,810.65 km) |
| Sliema to Philippeville | 1,105.46 mi (1,779.07 km) |
