| Bad Salzdetfurth to Marco de Canavezes | 1,137.88 mi (1,831.25 km) |
| Bad Salzdetfurth to Marinha Grande | 1,239.38 mi (1,994.58 km) |
| Bad Salzdetfurth to Massama | 1,303.88 mi (2,098.40 km) |
| Bad Salzdetfurth to Matosinhos | 1,157.33 mi (1,862.55 km) |
| Bad Salzdetfurth to Mealhada | 1,189.55 mi (1,914.39 km) |
| Bad Salzdetfurth to Melgaco | 1,095.41 mi (1,762.90 km) |
| Bad Salzdetfurth to Melres | 1,152.62 mi (1,854.96 km) |
| Bad Salzdetfurth to Mira | 1,196.80 mi (1,926.06 km) |
| Bad Salzdetfurth to Miranda do Corvo | 1,200.36 mi (1,931.79 km) |
| Bad Salzdetfurth to Mirandela | 1,088.66 mi (1,752.02 km) |
| Bad Salzdetfurth to Mogadouro | 1,080.55 mi (1,738.98 km) |
| Bad Salzdetfurth to Moimenta da Beira | 1,129.67 mi (1,818.03 km) |
| Bad Salzdetfurth to Moita | 1,299.84 mi (2,091.89 km) |
| Bad Salzdetfurth to Moncao | 1,105.26 mi (1,778.75 km) |
| Bad Salzdetfurth to Montalegre | 1,092.92 mi (1,758.89 km) |
