| Alcoa to Mangualde | 4,018.70 mi (6,467.47 km) |
| Alcoa to Marco de Canavezes | 3,985.00 mi (6,413.24 km) |
| Alcoa to Marinha Grande | 3,983.41 mi (6,410.68 km) |
| Alcoa to Massama | 3,992.40 mi (6,425.14 km) |
| Alcoa to Matosinhos | 3,958.37 mi (6,370.38 km) |
| Alcoa to Mealhada | 3,990.81 mi (6,422.59 km) |
| Alcoa to Melgaco | 3,956.08 mi (6,366.70 km) |
| Alcoa to Melres | 3,975.84 mi (6,398.50 km) |
| Alcoa to Mira | 3,975.69 mi (6,398.25 km) |
| Alcoa to Miranda do Corvo | 4,003.83 mi (6,443.54 km) |
| Alcoa to Mirandela | 4,024.01 mi (6,476.01 km) |
| Alcoa to Mogadouro | 4,050.28 mi (6,518.30 km) |
| Alcoa to Moimenta da Beira | 4,016.16 mi (6,463.39 km) |
| Alcoa to Moita | 4,009.74 mi (6,453.05 km) |
| Alcoa to Moncao | 3,946.93 mi (6,351.97 km) |
