| Portici to Massarosa | 293.55 mi (472.42 km) |
| Portici to Matelica | 181.70 mi (292.42 km) |
| Portici to Matera | 118.72 mi (191.06 km) |
| Portici to Matino | 206.71 mi (332.66 km) |
| Portici to Mazzarino | 243.31 mi (391.56 km) |
| Portici to Meda | 424.04 mi (682.43 km) |
| Portici to Medesano | 345.25 mi (555.62 km) |
| Portici to Medicina | 288.07 mi (463.61 km) |
| Portici to Meldola | 256.97 mi (413.56 km) |
| Portici to Melegnano | 402.88 mi (648.37 km) |
| Portici to Melendugno | 213.04 mi (342.86 km) |
| Portici to Melfi | 69.47 mi (111.80 km) |
| Portici to Melilli | 254.68 mi (409.86 km) |
| Portici to Melito di Napoli | 8.75 mi (14.09 km) |
| Portici to Melito di Porto Salvo | 214.85 mi (345.77 km) |
