| San Martin de la Vega to Mangualde | 222.05 mi (357.35 km) |
| San Martin de la Vega to Marco de Canavezes | 249.03 mi (400.78 km) |
| San Martin de la Vega to Marinha Grande | 285.56 mi (459.57 km) |
| San Martin de la Vega to Massama | 320.17 mi (515.26 km) |
| San Martin de la Vega to Matosinhos | 276.87 mi (445.58 km) |
| San Martin de la Vega to Mealhada | 257.30 mi (414.08 km) |
| San Martin de la Vega to Melgaco | 277.42 mi (446.47 km) |
| San Martin de la Vega to Melres | 259.92 mi (418.31 km) |
| San Martin de la Vega to Mira | 272.28 mi (438.19 km) |
| San Martin de la Vega to Miranda do Corvo | 251.51 mi (404.77 km) |
| San Martin de la Vega to Mirandela | 208.21 mi (335.08 km) |
| San Martin de la Vega to Mogadouro | 181.93 mi (292.78 km) |
| San Martin de la Vega to Moimenta da Beira | 218.59 mi (351.78 km) |
| San Martin de la Vega to Moita | 308.16 mi (495.93 km) |
| San Martin de la Vega to Moncao | 285.94 mi (460.18 km) |
