| Serik to Opwijk | 1,638.75 mi (2,637.31 km) |
| Serik to Ostend | 1,695.99 mi (2,729.43 km) |
| Serik to Oud-Heverlee | 1,615.78 mi (2,600.34 km) |
| Serik to Oud-Turnhout | 1,618.69 mi (2,605.04 km) |
| Serik to Oudenaarde | 1,658.26 mi (2,668.72 km) |
| Serik to Oudenburg | 1,691.59 mi (2,722.35 km) |
| Serik to Oupeye | 1,573.81 mi (2,532.80 km) |
| Serik to Overijse | 1,619.48 mi (2,606.31 km) |
| Serik to Overpelt | 1,598.90 mi (2,573.19 km) |
| Serik to Paal | 1,602.54 mi (2,579.04 km) |
| Serik to Peer | 1,594.76 mi (2,566.52 km) |
| Serik to Pepinster | 1,562.55 mi (2,514.69 km) |
| Serik to Peruwelz | 1,649.39 mi (2,654.44 km) |
| Serik to Perwez | 1,603.58 mi (2,580.72 km) |
| Serik to Philippeville | 1,601.54 mi (2,577.44 km) |
