| Portici to Minervino Murge | 92.94 mi (149.57 km) |
| Portici to Minturno | 43.62 mi (70.20 km) |
| Portici to Mira | 337.89 mi (543.79 km) |
| Portici to Mirandola | 326.28 mi (525.10 km) |
| Portici to Mirano | 342.50 mi (551.20 km) |
| Portici to Misano Adriatico | 232.99 mi (374.96 km) |
| Portici to Misilmeri | 198.31 mi (319.14 km) |
| Portici to Missaglia | 420.76 mi (677.14 km) |
| Portici to Misterbianco | 230.87 mi (371.56 km) |
| Portici to Modena | 316.05 mi (508.63 km) |
| Portici to Modica | 274.03 mi (441.00 km) |
| Portici to Modugno | 128.73 mi (207.18 km) |
| Portici to Mogliano Veneto | 344.35 mi (554.17 km) |
| Portici to Molfetta | 120.67 mi (194.19 km) |
| Portici to Molinella | 295.35 mi (475.32 km) |
