| Fier to Ostend | 1,074.61 mi (1,729.42 km) |
| Fier to Oud-Heverlee | 997.79 mi (1,605.78 km) |
| Fier to Oud-Turnhout | 1,008.57 mi (1,623.14 km) |
| Fier to Oudenaarde | 1,035.42 mi (1,666.35 km) |
| Fier to Oudenburg | 1,070.06 mi (1,722.10 km) |
| Fier to Oupeye | 959.41 mi (1,544.03 km) |
| Fier to Overijse | 1,000.20 mi (1,609.67 km) |
| Fier to Overpelt | 989.92 mi (1,593.13 km) |
| Fier to Paal | 989.86 mi (1,593.02 km) |
| Fier to Peer | 984.89 mi (1,585.02 km) |
| Fier to Pepinster | 947.27 mi (1,524.49 km) |
| Fier to Peruwelz | 1,022.54 mi (1,645.63 km) |
| Fier to Perwez | 983.71 mi (1,583.13 km) |
| Fier to Philippeville | 975.19 mi (1,569.41 km) |
| Fier to Plombieres | 950.42 mi (1,529.55 km) |
