| Fredrikstad to Opwijk | 628.24 mi (1,011.06 km) |
| Fredrikstad to Ostend | 634.73 mi (1,021.50 km) |
| Fredrikstad to Oud-Heverlee | 629.06 mi (1,012.38 km) |
| Fredrikstad to Oud-Turnhout | 592.96 mi (954.28 km) |
| Fredrikstad to Oudenaarde | 645.64 mi (1,039.05 km) |
| Fredrikstad to Oudenburg | 635.81 mi (1,023.23 km) |
| Fredrikstad to Oupeye | 623.22 mi (1,002.97 km) |
| Fredrikstad to Overijse | 634.37 mi (1,020.92 km) |
| Fredrikstad to Overpelt | 593.01 mi (954.35 km) |
| Fredrikstad to Paal | 608.10 mi (978.64 km) |
| Fredrikstad to Peer | 597.96 mi (962.32 km) |
| Fredrikstad to Pepinster | 630.32 mi (1,014.39 km) |
| Fredrikstad to Peruwelz | 667.06 mi (1,073.53 km) |
| Fredrikstad to Perwez | 640.37 mi (1,030.58 km) |
| Fredrikstad to Philippeville | 671.89 mi (1,081.31 km) |
