| Sigmaringen to Marco de Canavezes | 974.85 mi (1,568.87 km) |
| Sigmaringen to Marinha Grande | 1,067.25 mi (1,717.56 km) |
| Sigmaringen to Massama | 1,125.20 mi (1,810.84 km) |
| Sigmaringen to Matosinhos | 998.33 mi (1,606.65 km) |
| Sigmaringen to Mealhada | 1,020.18 mi (1,641.82 km) |
| Sigmaringen to Melgaco | 944.28 mi (1,519.67 km) |
| Sigmaringen to Melres | 990.13 mi (1,593.46 km) |
| Sigmaringen to Mira | 1,029.99 mi (1,657.60 km) |
| Sigmaringen to Miranda do Corvo | 1,027.31 mi (1,653.30 km) |
| Sigmaringen to Mirandela | 921.76 mi (1,483.44 km) |
| Sigmaringen to Mogadouro | 908.33 mi (1,461.82 km) |
| Sigmaringen to Moimenta da Beira | 960.40 mi (1,545.61 km) |
| Sigmaringen to Moita | 1,118.24 mi (1,799.64 km) |
| Sigmaringen to Moncao | 955.15 mi (1,537.17 km) |
| Sigmaringen to Montalegre | 934.65 mi (1,504.17 km) |
