| Gross-Zimmern to Marco de Canavezes | 1,014.13 mi (1,632.08 km) |
| Gross-Zimmern to Marinha Grande | 1,112.12 mi (1,789.78 km) |
| Gross-Zimmern to Massama | 1,174.04 mi (1,889.44 km) |
| Gross-Zimmern to Matosinhos | 1,035.49 mi (1,666.46 km) |
| Gross-Zimmern to Mealhada | 1,063.26 mi (1,711.16 km) |
| Gross-Zimmern to Melgaco | 976.76 mi (1,571.94 km) |
| Gross-Zimmern to Melres | 1,029.19 mi (1,656.31 km) |
| Gross-Zimmern to Mira | 1,071.68 mi (1,724.70 km) |
| Gross-Zimmern to Miranda do Corvo | 1,072.51 mi (1,726.05 km) |
| Gross-Zimmern to Mirandela | 962.90 mi (1,549.63 km) |
| Gross-Zimmern to Mogadouro | 952.42 mi (1,532.77 km) |
| Gross-Zimmern to Moimenta da Beira | 1,003.11 mi (1,614.35 km) |
| Gross-Zimmern to Moita | 1,168.73 mi (1,880.88 km) |
| Gross-Zimmern to Moncao | 987.14 mi (1,588.64 km) |
| Gross-Zimmern to Montalegre | 971.02 mi (1,562.70 km) |
