| Meilen to Mangualde | 933.95 mi (1,503.05 km) |
| Meilen to Marco de Canavezes | 928.61 mi (1,494.45 km) |
| Meilen to Marinha Grande | 1,018.64 mi (1,639.35 km) |
| Meilen to Massama | 1,075.05 mi (1,730.13 km) |
| Meilen to Matosinhos | 952.79 mi (1,533.37 km) |
| Meilen to Mealhada | 972.36 mi (1,564.87 km) |
| Meilen to Melgaco | 900.77 mi (1,449.65 km) |
| Meilen to Melres | 943.91 mi (1,519.07 km) |
| Meilen to Mira | 982.65 mi (1,581.42 km) |
| Meilen to Miranda do Corvo | 978.71 mi (1,575.07 km) |
| Meilen to Mirandela | 875.03 mi (1,408.22 km) |
| Meilen to Mogadouro | 860.55 mi (1,384.93 km) |
| Meilen to Moimenta da Beira | 912.92 mi (1,469.21 km) |
| Meilen to Moita | 1,067.55 mi (1,718.06 km) |
| Meilen to Moncao | 911.79 mi (1,467.38 km) |
