| Martos to Mangualde | 284.77 mi (458.29 km) |
| Martos to Marco de Canavezes | 327.30 mi (526.74 km) |
| Martos to Marinha Grande | 302.25 mi (486.42 km) |
| Martos to Massama | 296.85 mi (477.73 km) |
| Martos to Matosinhos | 347.95 mi (559.97 km) |
| Martos to Mealhada | 302.94 mi (487.54 km) |
| Martos to Melgaco | 379.81 mi (611.25 km) |
| Martos to Melres | 330.99 mi (532.68 km) |
| Martos to Mira | 317.09 mi (510.31 km) |
| Martos to Miranda do Corvo | 286.70 mi (461.41 km) |
| Martos to Mirandela | 311.54 mi (501.38 km) |
| Martos to Mogadouro | 289.65 mi (466.15 km) |
| Martos to Moimenta da Beira | 297.93 mi (479.47 km) |
| Martos to Moita | 279.94 mi (450.52 km) |
| Martos to Moncao | 384.38 mi (618.61 km) |
