| Houthulst to Marco de Canavezes | 858.87 mi (1,382.22 km) |
| Houthulst to Marinha Grande | 964.22 mi (1,551.77 km) |
| Houthulst to Massama | 1,032.16 mi (1,661.11 km) |
| Houthulst to Matosinhos | 875.22 mi (1,408.53 km) |
| Houthulst to Mealhada | 913.60 mi (1,470.29 km) |
| Houthulst to Melgaco | 809.98 mi (1,303.54 km) |
| Houthulst to Melres | 872.87 mi (1,404.75 km) |
| Houthulst to Mira | 918.90 mi (1,478.82 km) |
| Houthulst to Miranda do Corvo | 926.79 mi (1,491.53 km) |
| Houthulst to Mirandela | 813.70 mi (1,309.53 km) |
| Houthulst to Mogadouro | 809.79 mi (1,303.23 km) |
| Houthulst to Moimenta da Beira | 855.22 mi (1,376.35 km) |
| Houthulst to Moita | 1,030.47 mi (1,658.37 km) |
| Houthulst to Moncao | 818.99 mi (1,318.03 km) |
| Houthulst to Montalegre | 811.98 mi (1,306.76 km) |
