| Portales to Melzo | 5,517.24 mi (8,879.14 km) |
| Portales to Mendicino | 6,061.65 mi (9,755.28 km) |
| Portales to Menfi | 6,011.87 mi (9,675.17 km) |
| Portales to Mentana | 5,796.07 mi (9,327.87 km) |
| Portales to Merano | 5,529.92 mi (8,899.55 km) |
| Portales to Merate | 5,509.13 mi (8,866.09 km) |
| Portales to Mercato San Severino | 5,934.56 mi (9,550.74 km) |
| Portales to Mercogliano | 5,927.06 mi (9,538.68 km) |
| Portales to Mesagne | 6,059.40 mi (9,751.67 km) |
| Portales to Messina | 6,087.79 mi (9,797.36 km) |
| Portales to Mestre | 5,622.18 mi (9,048.02 km) |
| Portales to Mestrino | 5,606.74 mi (9,023.17 km) |
| Portales to Milan | 5,510.16 mi (8,867.75 km) |
| Portales to Milazzo | 6,074.18 mi (9,775.45 km) |
| Portales to Minerbio | 5,633.29 mi (9,065.90 km) |
