| Herent to Marco de Canavezes | 908.20 mi (1,461.61 km) |
| Herent to Marinha Grande | 1,012.11 mi (1,628.83 km) |
| Herent to Massama | 1,078.75 mi (1,736.07 km) |
| Herent to Matosinhos | 926.00 mi (1,490.25 km) |
| Herent to Mealhada | 961.71 mi (1,547.72 km) |
| Herent to Melgaco | 862.17 mi (1,387.52 km) |
| Herent to Melres | 922.57 mi (1,484.73 km) |
| Herent to Mira | 967.88 mi (1,557.65 km) |
| Herent to Miranda do Corvo | 973.90 mi (1,567.35 km) |
| Herent to Mirandela | 861.10 mi (1,385.80 km) |
| Herent to Mogadouro | 855.34 mi (1,376.54 km) |
| Herent to Moimenta da Beira | 902.52 mi (1,452.47 km) |
| Herent to Moita | 1,076.07 mi (1,731.76 km) |
| Herent to Moncao | 871.59 mi (1,402.70 km) |
| Herent to Montalegre | 862.07 mi (1,387.36 km) |
