| Miren to Mangualde | 1,131.72 mi (1,821.32 km) |
| Miren to Marco de Canavezes | 1,133.24 mi (1,823.78 km) |
| Miren to Marinha Grande | 1,213.61 mi (1,953.12 km) |
| Miren to Massama | 1,262.98 mi (2,032.56 km) |
| Miren to Matosinhos | 1,159.39 mi (1,865.86 km) |
| Miren to Mealhada | 1,170.94 mi (1,884.44 km) |
| Miren to Melgaco | 1,114.13 mi (1,793.01 km) |
| Miren to Melres | 1,148.41 mi (1,848.19 km) |
| Miren to Mira | 1,182.79 mi (1,903.52 km) |
| Miren to Miranda do Corvo | 1,174.24 mi (1,889.76 km) |
| Miren to Mirandela | 1,078.86 mi (1,736.25 km) |
| Miren to Mogadouro | 1,061.03 mi (1,707.56 km) |
| Miren to Moimenta da Beira | 1,113.62 mi (1,792.20 km) |
| Miren to Moita | 1,253.20 mi (2,016.83 km) |
| Miren to Moncao | 1,125.41 mi (1,811.17 km) |
