| Santa Maria to Mangualde | 5,691.67 mi (9,159.85 km) |
| Santa Maria to Marco de Canavezes | 5,650.35 mi (9,093.37 km) |
| Santa Maria to Marinha Grande | 5,682.14 mi (9,144.52 km) |
| Santa Maria to Massama | 5,711.83 mi (9,192.30 km) |
| Santa Maria to Matosinhos | 5,628.38 mi (9,058.01 km) |
| Santa Maria to Mealhada | 5,673.79 mi (9,131.08 km) |
| Santa Maria to Melgaco | 5,604.38 mi (9,019.38 km) |
| Santa Maria to Melres | 5,645.54 mi (9,085.62 km) |
| Santa Maria to Mira | 5,660.13 mi (9,109.09 km) |
| Santa Maria to Miranda do Corvo | 5,691.07 mi (9,158.90 km) |
| Santa Maria to Mirandela | 5,675.22 mi (9,133.39 km) |
| Santa Maria to Mogadouro | 5,700.35 mi (9,173.82 km) |
| Santa Maria to Moimenta da Beira | 5,680.78 mi (9,142.33 km) |
| Santa Maria to Moita | 5,728.64 mi (9,219.35 km) |
| Santa Maria to Moncao | 5,597.89 mi (9,008.93 km) |
