| Marginea to Mangualde | 1,721.45 mi (2,770.41 km) |
| Marginea to Marco de Canavezes | 1,720.96 mi (2,769.61 km) |
| Marginea to Marinha Grande | 1,804.12 mi (2,903.46 km) |
| Marginea to Massama | 1,854.59 mi (2,984.67 km) |
| Marginea to Matosinhos | 1,746.45 mi (2,810.64 km) |
| Marginea to Mealhada | 1,760.56 mi (2,833.35 km) |
| Marginea to Melgaco | 1,698.03 mi (2,732.72 km) |
| Marginea to Melres | 1,736.21 mi (2,794.16 km) |
| Marginea to Mira | 1,772.03 mi (2,851.81 km) |
| Marginea to Miranda do Corvo | 1,764.57 mi (2,839.80 km) |
| Marginea to Mirandela | 1,666.71 mi (2,682.30 km) |
| Marginea to Mogadouro | 1,649.87 mi (2,655.22 km) |
| Marginea to Moimenta da Beira | 1,702.54 mi (2,739.97 km) |
| Marginea to Moita | 1,845.00 mi (2,969.24 km) |
| Marginea to Moncao | 1,709.20 mi (2,750.70 km) |
