| Portici to Mozzate | 431.67 mi (694.71 km) |
| Portici to Muggia | 331.55 mi (533.58 km) |
| Portici to Muggio | 418.44 mi (673.41 km) |
| Portici to Mugnano di Napoli | 9.25 mi (14.88 km) |
| Portici to Musile di Piave | 343.34 mi (552.55 km) |
| Portici to Mussomeli | 226.09 mi (363.85 km) |
| Portici to Naples | 4.85 mi (7.81 km) |
| Portici to Nardo | 198.94 mi (320.17 km) |
| Portici to Narni | 150.37 mi (242.00 km) |
| Portici to Nembro | 410.77 mi (661.07 km) |
| Portici to Nepi | 142.55 mi (229.41 km) |
| Portici to Nerviano | 423.68 mi (681.84 km) |
| Portici to Nettuno | 97.92 mi (157.59 km) |
| Portici to Nichelino | 444.73 mi (715.72 km) |
| Portici to Nicosia | 212.12 mi (341.37 km) |
