| Flieden to Marco de Canavezes | 1,061.19 mi (1,707.82 km) |
| Flieden to Marinha Grande | 1,159.81 mi (1,866.54 km) |
| Flieden to Massama | 1,222.16 mi (1,966.88 km) |
| Flieden to Matosinhos | 1,082.23 mi (1,741.69 km) |
| Flieden to Mealhada | 1,110.78 mi (1,787.62 km) |
| Flieden to Melgaco | 1,022.88 mi (1,646.17 km) |
| Flieden to Melres | 1,076.20 mi (1,731.98 km) |
| Flieden to Mira | 1,119.01 mi (1,800.87 km) |
| Flieden to Miranda do Corvo | 1,120.28 mi (1,802.92 km) |
| Flieden to Mirandela | 1,010.27 mi (1,625.87 km) |
| Flieden to Mogadouro | 1,000.17 mi (1,609.62 km) |
| Flieden to Moimenta da Beira | 1,050.63 mi (1,690.83 km) |
| Flieden to Moita | 1,217.03 mi (1,958.62 km) |
| Flieden to Moncao | 1,033.17 mi (1,662.73 km) |
| Flieden to Montalegre | 1,017.73 mi (1,637.88 km) |
