| Santa Clara to Mangualde | 5,632.12 mi (9,064.02 km) |
| Santa Clara to Marco de Canavezes | 5,590.05 mi (8,996.32 km) |
| Santa Clara to Marinha Grande | 5,626.49 mi (9,054.96 km) |
| Santa Clara to Massama | 5,659.11 mi (9,107.46 km) |
| Santa Clara to Matosinhos | 5,568.94 mi (8,962.34 km) |
| Santa Clara to Mealhada | 5,615.86 mi (9,037.85 km) |
| Santa Clara to Melgaco | 5,542.05 mi (8,919.07 km) |
| Santa Clara to Melres | 5,585.91 mi (8,989.65 km) |
| Santa Clara to Mira | 5,602.52 mi (9,016.39 km) |
| Santa Clara to Miranda do Corvo | 5,633.63 mi (9,066.45 km) |
| Santa Clara to Mirandela | 5,612.70 mi (9,032.77 km) |
| Santa Clara to Mogadouro | 5,637.45 mi (9,072.59 km) |
| Santa Clara to Moimenta da Beira | 5,620.12 mi (9,044.70 km) |
| Santa Clara to Moita | 5,675.70 mi (9,134.16 km) |
| Santa Clara to Moncao | 5,535.99 mi (8,909.31 km) |
