| Gagnef to Mangualde | 1,687.79 mi (2,716.24 km) |
| Gagnef to Marco de Canavezes | 1,661.94 mi (2,674.63 km) |
| Gagnef to Marinha Grande | 1,768.71 mi (2,846.47 km) |
| Gagnef to Massama | 1,838.10 mi (2,958.13 km) |
| Gagnef to Matosinhos | 1,675.62 mi (2,696.66 km) |
| Gagnef to Mealhada | 1,718.09 mi (2,765.01 km) |
| Gagnef to Melgaco | 1,608.40 mi (2,588.48 km) |
| Gagnef to Melres | 1,675.21 mi (2,696.00 km) |
| Gagnef to Mira | 1,722.02 mi (2,771.33 km) |
| Gagnef to Miranda do Corvo | 1,732.59 mi (2,788.34 km) |
| Gagnef to Mirandela | 1,619.86 mi (2,606.91 km) |
| Gagnef to Mogadouro | 1,618.00 mi (2,603.93 km) |
| Gagnef to Moimenta da Beira | 1,661.22 mi (2,673.48 km) |
| Gagnef to Moita | 1,837.62 mi (2,957.37 km) |
| Gagnef to Moncao | 1,616.41 mi (2,601.36 km) |
