| Sankt Valentin to Marco de Canavezes | 1,208.78 mi (1,945.34 km) |
| Sankt Valentin to Marinha Grande | 1,297.05 mi (2,087.40 km) |
| Sankt Valentin to Massama | 1,351.74 mi (2,175.41 km) |
| Sankt Valentin to Matosinhos | 1,233.28 mi (1,984.78 km) |
| Sankt Valentin to Mealhada | 1,251.49 mi (2,014.08 km) |
| Sankt Valentin to Melgaco | 1,181.89 mi (1,902.06 km) |
| Sankt Valentin to Melres | 1,224.08 mi (1,969.97 km) |
| Sankt Valentin to Mira | 1,262.11 mi (2,031.17 km) |
| Sankt Valentin to Miranda do Corvo | 1,257.16 mi (2,023.21 km) |
| Sankt Valentin to Mirandela | 1,154.98 mi (1,858.76 km) |
| Sankt Valentin to Mogadouro | 1,139.84 mi (1,834.40 km) |
| Sankt Valentin to Moimenta da Beira | 1,192.37 mi (1,918.93 km) |
| Sankt Valentin to Moita | 1,343.55 mi (2,162.24 km) |
| Sankt Valentin to Moncao | 1,192.93 mi (1,919.83 km) |
| Sankt Valentin to Montalegre | 1,170.41 mi (1,883.60 km) |
