| Cities | Distance |
|---|
| Portici to Opwijk | 852.76 mi (1,372.38 km) |
| Portici to Ostend | 901.79 mi (1,451.28 km) |
| Portici to Oud-Heverlee | 832.51 mi (1,339.79 km) |
| Portici to Oud-Turnhout | 851.25 mi (1,369.96 km) |
| Portici to Oudenaarde | 862.78 mi (1,388.51 km) |
| Portici to Oudenburg | 897.27 mi (1,444.02 km) |
| Portici to Oupeye | 800.37 mi (1,288.07 km) |
| Portici to Overijse | 833.35 mi (1,341.15 km) |
| Portici to Overpelt | 834.91 mi (1,343.66 km) |
| Portici to Paal | 830.86 mi (1,337.14 km) |
| Portici to Peer | 829.22 mi (1,334.50 km) |
| Portici to Pepinster | 787.99 mi (1,268.15 km) |
| Portici to Peruwelz | 845.94 mi (1,361.41 km) |
| Portici to Perwez | 817.10 mi (1,314.99 km) |
| Portici to Philippeville | 801.54 mi (1,289.95 km) |
