| Herdecke to Marco de Canavezes | 1,021.64 mi (1,644.17 km) |
| Herdecke to Marinha Grande | 1,124.00 mi (1,808.90 km) |
| Herdecke to Massama | 1,189.29 mi (1,913.97 km) |
| Herdecke to Matosinhos | 1,040.57 mi (1,674.64 km) |
| Herdecke to Mealhada | 1,073.94 mi (1,728.34 km) |
| Herdecke to Melgaco | 978.02 mi (1,573.98 km) |
| Herdecke to Melres | 1,036.26 mi (1,667.70 km) |
| Herdecke to Mira | 1,080.84 mi (1,739.44 km) |
| Herdecke to Miranda do Corvo | 1,085.23 mi (1,746.51 km) |
| Herdecke to Mirandela | 973.07 mi (1,566.00 km) |
| Herdecke to Mogadouro | 965.74 mi (1,554.21 km) |
| Herdecke to Moimenta da Beira | 1,014.25 mi (1,632.28 km) |
| Herdecke to Moita | 1,185.72 mi (1,908.23 km) |
| Herdecke to Moncao | 987.75 mi (1,589.63 km) |
| Herdecke to Montalegre | 976.27 mi (1,571.16 km) |
