| Marinha Grande to Mangualde | 85.51 mi (137.62 km) |
| Marinha Grande to Marco de Canavezes | 107.25 mi (172.60 km) |
| Marinha Grande to Massama | 71.01 mi (114.29 km) |
| Marinha Grande to Matosinhos | 99.79 mi (160.59 km) |
| Marinha Grande to Mealhada | 50.67 mi (81.55 km) |
| Marinha Grande to Melgaco | 167.18 mi (269.05 km) |
| Marinha Grande to Melres | 95.20 mi (153.21 km) |
| Marinha Grande to Mira | 48.38 mi (77.86 km) |
| Marinha Grande to Miranda do Corvo | 39.94 mi (64.28 km) |
| Marinha Grande to Mirandela | 151.04 mi (243.07 km) |
| Marinha Grande to Mogadouro | 159.72 mi (257.04 km) |
| Marinha Grande to Moimenta da Beira | 109.75 mi (176.63 km) |
| Marinha Grande to Moita | 76.05 mi (122.39 km) |
| Marinha Grande to Moncao | 162.26 mi (261.13 km) |
| Marinha Grande to Montalegre | 155.18 mi (249.75 km) |
