| Formby to Mangualde | 921.40 mi (1,482.85 km) |
| Formby to Marco de Canavezes | 886.94 mi (1,427.40 km) |
| Formby to Marinha Grande | 992.98 mi (1,598.04 km) |
| Formby to Massama | 1,063.99 mi (1,712.32 km) |
| Formby to Matosinhos | 894.06 mi (1,438.85 km) |
| Formby to Mealhada | 944.36 mi (1,519.81 km) |
| Formby to Melgaco | 825.97 mi (1,329.26 km) |
| Formby to Melres | 897.90 mi (1,445.03 km) |
| Formby to Mira | 944.62 mi (1,520.22 km) |
| Formby to Miranda do Corvo | 961.98 mi (1,548.16 km) |
| Formby to Mirandela | 855.63 mi (1,377.00 km) |
| Formby to Mogadouro | 861.44 mi (1,386.35 km) |
| Formby to Moimenta da Beira | 894.41 mi (1,439.42 km) |
| Formby to Moita | 1,067.45 mi (1,717.89 km) |
| Formby to Moncao | 831.75 mi (1,338.57 km) |
