| Gardelegen to Marco de Canavezes | 1,204.21 mi (1,937.99 km) |
| Gardelegen to Marinha Grande | 1,305.51 mi (2,101.01 km) |
| Gardelegen to Massama | 1,369.82 mi (2,204.52 km) |
| Gardelegen to Matosinhos | 1,223.75 mi (1,969.44 km) |
| Gardelegen to Mealhada | 1,255.74 mi (2,020.91 km) |
| Gardelegen to Melgaco | 1,161.92 mi (1,869.94 km) |
| Gardelegen to Melres | 1,218.96 mi (1,961.73 km) |
| Gardelegen to Mira | 1,263.06 mi (2,032.70 km) |
| Gardelegen to Miranda do Corvo | 1,266.44 mi (2,038.13 km) |
| Gardelegen to Mirandela | 1,154.85 mi (1,858.56 km) |
| Gardelegen to Mogadouro | 1,146.57 mi (1,845.23 km) |
| Gardelegen to Moimenta da Beira | 1,195.82 mi (1,924.49 km) |
| Gardelegen to Moita | 1,365.66 mi (2,197.81 km) |
| Gardelegen to Moncao | 1,171.79 mi (1,885.81 km) |
| Gardelegen to Montalegre | 1,159.33 mi (1,865.76 km) |
