| Petite-Synthe to Marco de Canavezes | 844.02 mi (1,358.32 km) |
| Petite-Synthe to Marinha Grande | 949.82 mi (1,528.59 km) |
| Petite-Synthe to Massama | 1,018.21 mi (1,638.65 km) |
| Petite-Synthe to Matosinhos | 859.77 mi (1,383.67 km) |
| Petite-Synthe to Mealhada | 899.16 mi (1,447.06 km) |
| Petite-Synthe to Melgaco | 794.05 mi (1,277.89 km) |
| Petite-Synthe to Melres | 857.86 mi (1,380.59 km) |
| Petite-Synthe to Mira | 904.11 mi (1,455.03 km) |
| Petite-Synthe to Miranda do Corvo | 912.73 mi (1,468.90 km) |
| Petite-Synthe to Mirandela | 799.67 mi (1,286.94 km) |
| Petite-Synthe to Mogadouro | 796.48 mi (1,281.81 km) |
| Petite-Synthe to Moimenta da Beira | 841.17 mi (1,353.74 km) |
| Petite-Synthe to Moita | 1,016.89 mi (1,636.53 km) |
| Petite-Synthe to Moncao | 802.87 mi (1,292.09 km) |
| Petite-Synthe to Montalegre | 796.88 mi (1,282.46 km) |
