| Socuellamos to Mangualde | 278.19 mi (447.71 km) |
| Socuellamos to Marco de Canavezes | 311.13 mi (500.72 km) |
| Socuellamos to Marinha Grande | 328.65 mi (528.91 km) |
| Socuellamos to Massama | 349.75 mi (562.87 km) |
| Socuellamos to Matosinhos | 337.66 mi (543.42 km) |
| Socuellamos to Mealhada | 309.31 mi (497.78 km) |
| Socuellamos to Melgaco | 346.61 mi (557.81 km) |
| Socuellamos to Melres | 320.21 mi (515.32 km) |
| Socuellamos to Mira | 324.60 mi (522.40 km) |
| Socuellamos to Miranda do Corvo | 299.65 mi (482.24 km) |
| Socuellamos to Mirandela | 276.08 mi (444.30 km) |
| Socuellamos to Mogadouro | 250.11 mi (402.51 km) |
| Socuellamos to Moimenta da Beira | 279.92 mi (450.48 km) |
| Socuellamos to Moita | 335.35 mi (539.69 km) |
| Socuellamos to Moncao | 354.34 mi (570.26 km) |
