| Herenthout to Marco de Canavezes | 922.66 mi (1,484.87 km) |
| Herenthout to Marinha Grande | 1,026.81 mi (1,652.49 km) |
| Herenthout to Massama | 1,093.65 mi (1,760.07 km) |
| Herenthout to Matosinhos | 940.22 mi (1,513.13 km) |
| Herenthout to Mealhada | 976.36 mi (1,571.31 km) |
| Herenthout to Melgaco | 876.12 mi (1,409.98 km) |
| Herenthout to Melres | 936.96 mi (1,507.90 km) |
| Herenthout to Mira | 982.40 mi (1,581.02 km) |
| Herenthout to Miranda do Corvo | 988.71 mi (1,591.18 km) |
| Herenthout to Mirandela | 875.83 mi (1,409.52 km) |
| Herenthout to Mogadouro | 870.34 mi (1,400.68 km) |
| Herenthout to Moimenta da Beira | 917.28 mi (1,476.23 km) |
| Herenthout to Moita | 1,091.11 mi (1,755.97 km) |
| Herenthout to Moncao | 885.47 mi (1,425.03 km) |
| Herenthout to Montalegre | 876.38 mi (1,410.40 km) |
