| Grevesmuhlen to Marco de Canavezes | 1,249.32 mi (2,010.59 km) |
| Grevesmuhlen to Marinha Grande | 1,352.68 mi (2,176.93 km) |
| Grevesmuhlen to Massama | 1,418.67 mi (2,283.14 km) |
| Grevesmuhlen to Matosinhos | 1,267.42 mi (2,039.71 km) |
| Grevesmuhlen to Mealhada | 1,302.41 mi (2,096.02 km) |
| Grevesmuhlen to Melgaco | 1,203.73 mi (1,937.22 km) |
| Grevesmuhlen to Melres | 1,263.77 mi (2,033.84 km) |
| Grevesmuhlen to Mira | 1,308.86 mi (2,106.40 km) |
| Grevesmuhlen to Miranda do Corvo | 1,314.20 mi (2,115.00 km) |
| Grevesmuhlen to Mirandela | 1,201.64 mi (1,933.86 km) |
| Grevesmuhlen to Mogadouro | 1,195.10 mi (1,923.33 km) |
| Grevesmuhlen to Moimenta da Beira | 1,242.98 mi (2,000.38 km) |
| Grevesmuhlen to Moita | 1,415.49 mi (2,278.01 km) |
| Grevesmuhlen to Moncao | 1,213.17 mi (1,952.41 km) |
| Grevesmuhlen to Montalegre | 1,203.39 mi (1,936.66 km) |
