| Best to Marco de Canavezes | 959.93 mi (1,544.86 km) |
| Best to Marinha Grande | 1,064.07 mi (1,712.45 km) |
| Best to Massama | 1,130.88 mi (1,819.97 km) |
| Best to Matosinhos | 977.48 mi (1,573.11 km) |
| Best to Mealhada | 1,013.63 mi (1,631.27 km) |
| Best to Melgaco | 913.35 mi (1,469.90 km) |
| Best to Melres | 974.24 mi (1,567.88 km) |
| Best to Mira | 1,019.67 mi (1,641.00 km) |
| Best to Miranda do Corvo | 1,025.96 mi (1,651.12 km) |
| Best to Mirandela | 913.09 mi (1,469.47 km) |
| Best to Mogadouro | 907.54 mi (1,460.55 km) |
| Best to Moimenta da Beira | 954.53 mi (1,536.17 km) |
| Best to Moita | 1,128.30 mi (1,815.82 km) |
| Best to Moncao | 922.69 mi (1,484.93 km) |
| Best to Montalegre | 913.65 mi (1,470.38 km) |
