| Fiumicino to Opwijk | 741.54 mi (1,193.39 km) |
| Fiumicino to Ostend | 788.18 mi (1,268.46 km) |
| Fiumicino to Oud-Heverlee | 722.23 mi (1,162.32 km) |
| Fiumicino to Oud-Turnhout | 743.52 mi (1,196.58 km) |
| Fiumicino to Oudenaarde | 749.64 mi (1,206.44 km) |
| Fiumicino to Oudenburg | 783.73 mi (1,261.29 km) |
| Fiumicino to Oupeye | 692.79 mi (1,114.93 km) |
| Fiumicino to Overijse | 722.52 mi (1,162.78 km) |
| Fiumicino to Overpelt | 728.26 mi (1,172.02 km) |
| Fiumicino to Paal | 722.83 mi (1,163.28 km) |
| Fiumicino to Peer | 722.41 mi (1,162.61 km) |
| Fiumicino to Pepinster | 680.53 mi (1,095.21 km) |
| Fiumicino to Peruwelz | 731.71 mi (1,177.57 km) |
| Fiumicino to Perwez | 706.57 mi (1,137.12 km) |
| Fiumicino to Philippeville | 688.80 mi (1,108.52 km) |
