| Republic to Mangualde | 4,421.21 mi (7,115.24 km) |
| Republic to Marco de Canavezes | 4,384.67 mi (7,056.44 km) |
| Republic to Marinha Grande | 4,393.89 mi (7,071.28 km) |
| Republic to Massama | 4,409.71 mi (7,096.74 km) |
| Republic to Matosinhos | 4,359.24 mi (7,015.52 km) |
| Republic to Mealhada | 4,396.25 mi (7,075.09 km) |
| Republic to Melgaco | 4,349.89 mi (7,000.47 km) |
| Republic to Melres | 4,376.81 mi (7,043.80 km) |
| Republic to Mira | 4,381.44 mi (7,051.24 km) |
| Republic to Miranda do Corvo | 4,410.80 mi (7,098.49 km) |
| Republic to Mirandela | 4,419.56 mi (7,112.59 km) |
| Republic to Mogadouro | 4,445.77 mi (7,154.78 km) |
| Republic to Moimenta da Beira | 4,415.94 mi (7,106.78 km) |
| Republic to Moita | 4,427.05 mi (7,124.65 km) |
| Republic to Moncao | 4,341.49 mi (6,986.95 km) |
