| Normal to Mangualde | 4,095.64 mi (6,591.30 km) |
| Normal to Marco de Canavezes | 4,058.55 mi (6,531.60 km) |
| Normal to Marinha Grande | 4,070.21 mi (6,550.37 km) |
| Normal to Massama | 4,087.77 mi (6,578.63 km) |
| Normal to Matosinhos | 4,033.41 mi (6,491.14 km) |
| Normal to Mealhada | 4,071.38 mi (6,552.25 km) |
| Normal to Melgaco | 4,022.64 mi (6,473.81 km) |
| Normal to Melres | 4,050.97 mi (6,519.41 km) |
| Normal to Mira | 4,056.65 mi (6,528.55 km) |
| Normal to Miranda do Corvo | 4,086.25 mi (6,576.18 km) |
| Normal to Mirandela | 4,092.56 mi (6,586.33 km) |
| Normal to Mogadouro | 4,118.72 mi (6,628.44 km) |
| Normal to Moimenta da Beira | 4,089.80 mi (6,581.90 km) |
| Normal to Moita | 4,105.08 mi (6,606.49 km) |
| Normal to Moncao | 4,014.39 mi (6,460.54 km) |
