| Heum to Marco de Canavezes | 1,467.48 mi (2,361.68 km) |
| Heum to Marinha Grande | 1,574.54 mi (2,533.97 km) |
| Heum to Massama | 1,644.39 mi (2,646.38 km) |
| Heum to Matosinhos | 1,480.31 mi (2,382.33 km) |
| Heum to Mealhada | 1,524.02 mi (2,452.68 km) |
| Heum to Melgaco | 1,412.74 mi (2,273.58 km) |
| Heum to Melres | 1,480.48 mi (2,382.61 km) |
| Heum to Mira | 1,527.45 mi (2,458.19 km) |
| Heum to Miranda do Corvo | 1,539.02 mi (2,476.82 km) |
| Heum to Mirandela | 1,426.70 mi (2,296.05 km) |
| Heum to Mogadouro | 1,425.90 mi (2,294.76 km) |
| Heum to Moimenta da Beira | 1,467.90 mi (2,362.35 km) |
| Heum to Moita | 1,644.49 mi (2,646.56 km) |
| Heum to Moncao | 1,420.48 mi (2,286.03 km) |
| Heum to Montalegre | 1,419.65 mi (2,284.70 km) |
