| East San Gabriel to Mangualde | 5,635.26 mi (9,069.08 km) |
| East San Gabriel to Marco de Canavezes | 5,594.57 mi (9,003.60 km) |
| East San Gabriel to Marinha Grande | 5,622.83 mi (9,049.08 km) |
| East San Gabriel to Massama | 5,650.32 mi (9,093.31 km) |
| East San Gabriel to Matosinhos | 5,571.99 mi (8,967.24 km) |
| East San Gabriel to Mealhada | 5,616.19 mi (9,038.39 km) |
| East San Gabriel to Melgaco | 5,550.20 mi (8,932.19 km) |
| East San Gabriel to Melres | 5,589.26 mi (8,995.05 km) |
| East San Gabriel to Mira | 5,602.30 mi (9,016.04 km) |
| East San Gabriel to Miranda do Corvo | 5,633.09 mi (9,065.58 km) |
| East San Gabriel to Mirandela | 5,621.10 mi (9,046.29 km) |
| East San Gabriel to Mogadouro | 5,646.47 mi (9,087.12 km) |
| East San Gabriel to Moimenta da Beira | 5,625.23 mi (9,052.93 km) |
| East San Gabriel to Moita | 5,667.27 mi (9,120.58 km) |
| East San Gabriel to Moncao | 5,543.39 mi (8,921.23 km) |
