| Seyhan to Opwijk | 1,805.09 mi (2,905.01 km) |
| Seyhan to Ostend | 1,862.76 mi (2,997.82 km) |
| Seyhan to Oud-Heverlee | 1,782.13 mi (2,868.07 km) |
| Seyhan to Oud-Turnhout | 1,781.41 mi (2,866.90 km) |
| Seyhan to Oudenaarde | 1,826.28 mi (2,939.12 km) |
| Seyhan to Oudenburg | 1,858.50 mi (2,990.96 km) |
| Seyhan to Oupeye | 1,739.21 mi (2,798.99 km) |
| Seyhan to Overijse | 1,786.39 mi (2,874.91 km) |
| Seyhan to Overpelt | 1,761.45 mi (2,834.78 km) |
| Seyhan to Paal | 1,766.68 mi (2,843.20 km) |
| Seyhan to Peer | 1,757.78 mi (2,828.88 km) |
| Seyhan to Pepinster | 1,728.55 mi (2,781.83 km) |
| Seyhan to Peruwelz | 1,819.49 mi (2,928.18 km) |
| Seyhan to Perwez | 1,771.01 mi (2,850.16 km) |
| Seyhan to Philippeville | 1,772.09 mi (2,851.90 km) |
