| Salzwedel to Marco de Canavezes | 1,208.07 mi (1,944.20 km) |
| Salzwedel to Marinha Grande | 1,310.03 mi (2,108.30 km) |
| Salzwedel to Massama | 1,374.89 mi (2,212.67 km) |
| Salzwedel to Matosinhos | 1,227.18 mi (1,974.96 km) |
| Salzwedel to Mealhada | 1,260.09 mi (2,027.92 km) |
| Salzwedel to Melgaco | 1,164.77 mi (1,874.51 km) |
| Salzwedel to Melres | 1,222.73 mi (1,967.80 km) |
| Salzwedel to Mira | 1,267.15 mi (2,039.28 km) |
| Salzwedel to Miranda do Corvo | 1,271.13 mi (2,045.68 km) |
| Salzwedel to Mirandela | 1,159.20 mi (1,865.54 km) |
| Salzwedel to Mogadouro | 1,151.44 mi (1,853.07 km) |
| Salzwedel to Moimenta da Beira | 1,200.30 mi (1,931.69 km) |
| Salzwedel to Moita | 1,371.02 mi (2,206.45 km) |
| Salzwedel to Moncao | 1,174.51 mi (1,890.19 km) |
| Salzwedel to Montalegre | 1,162.84 mi (1,871.41 km) |
