| Heckmondwike to Mangualde | 948.67 mi (1,526.74 km) |
| Heckmondwike to Marco de Canavezes | 915.88 mi (1,473.96 km) |
| Heckmondwike to Marinha Grande | 1,022.62 mi (1,645.74 km) |
| Heckmondwike to Massama | 1,093.59 mi (1,759.96 km) |
| Heckmondwike to Matosinhos | 924.52 mi (1,487.87 km) |
| Heckmondwike to Mealhada | 973.33 mi (1,566.42 km) |
| Heckmondwike to Melgaco | 856.27 mi (1,378.03 km) |
| Heckmondwike to Melres | 927.41 mi (1,492.53 km) |
| Heckmondwike to Mira | 974.39 mi (1,568.13 km) |
| Heckmondwike to Miranda do Corvo | 990.37 mi (1,593.85 km) |
| Heckmondwike to Mirandela | 882.02 mi (1,419.47 km) |
| Heckmondwike to Mogadouro | 886.27 mi (1,426.32 km) |
| Heckmondwike to Moimenta da Beira | 921.61 mi (1,483.18 km) |
| Heckmondwike to Moita | 1,096.25 mi (1,764.24 km) |
| Heckmondwike to Moncao | 862.61 mi (1,388.24 km) |
