| Streetly to Mangualde | 872.31 mi (1,403.85 km) |
| Streetly to Marco de Canavezes | 840.22 mi (1,352.21 km) |
| Streetly to Marinha Grande | 947.18 mi (1,524.34 km) |
| Streetly to Massama | 1,018.08 mi (1,638.45 km) |
| Streetly to Matosinhos | 849.57 mi (1,367.25 km) |
| Streetly to Mealhada | 897.64 mi (1,444.60 km) |
| Streetly to Melgaco | 781.32 mi (1,257.41 km) |
| Streetly to Melres | 852.01 mi (1,371.17 km) |
| Streetly to Mira | 899.06 mi (1,446.90 km) |
| Streetly to Miranda do Corvo | 914.42 mi (1,471.61 km) |
| Streetly to Mirandela | 805.40 mi (1,296.16 km) |
| Streetly to Mogadouro | 809.14 mi (1,302.18 km) |
| Streetly to Moimenta da Beira | 845.24 mi (1,360.29 km) |
| Streetly to Moita | 1,020.39 mi (1,642.16 km) |
| Streetly to Moncao | 787.94 mi (1,268.07 km) |
