| Grande-Synthe to Marco de Canavezes | 842.13 mi (1,355.27 km) |
| Grande-Synthe to Marinha Grande | 947.96 mi (1,525.59 km) |
| Grande-Synthe to Massama | 1,016.37 mi (1,635.69 km) |
| Grande-Synthe to Matosinhos | 857.85 mi (1,380.57 km) |
| Grande-Synthe to Mealhada | 897.29 mi (1,444.05 km) |
| Grande-Synthe to Melgaco | 792.09 mi (1,274.75 km) |
| Grande-Synthe to Melres | 855.95 mi (1,377.53 km) |
| Grande-Synthe to Mira | 902.22 mi (1,451.99 km) |
| Grande-Synthe to Miranda do Corvo | 910.89 mi (1,465.93 km) |
| Grande-Synthe to Mirandela | 797.83 mi (1,283.98 km) |
| Grande-Synthe to Mogadouro | 794.68 mi (1,278.92 km) |
| Grande-Synthe to Moimenta da Beira | 839.33 mi (1,350.77 km) |
| Grande-Synthe to Moita | 1,015.07 mi (1,633.61 km) |
| Grande-Synthe to Moncao | 800.91 mi (1,288.94 km) |
| Grande-Synthe to Montalegre | 794.98 mi (1,279.39 km) |
