| Portici to Busto Arsizio | 431.10 mi (693.79 km) |
| Portici to Busto Garolfo | 426.67 mi (686.66 km) |
| Portici to Cabras | 311.71 mi (501.65 km) |
| Portici to Cadelbosco di Sopra | 332.10 mi (534.47 km) |
| Portici to Cadoneghe | 342.14 mi (550.62 km) |
| Portici to Cagli | 207.55 mi (334.02 km) |
| Portici to Cagliari | 297.72 mi (479.13 km) |
| Portici to Cairo Montenotte | 395.55 mi (636.57 km) |
| Portici to Caivano | 9.26 mi (14.89 km) |
| Portici to Calcinaia | 274.58 mi (441.90 km) |
| Portici to Calcinato | 376.58 mi (606.05 km) |
| Portici to Calderara di Reno | 302.27 mi (486.46 km) |
| Portici to Caldogno | 359.99 mi (579.35 km) |
| Portici to Calenzano | 265.66 mi (427.54 km) |
| Portici to Calolziocorte | 423.24 mi (681.14 km) |
