| Sarnen to Mangualde | 907.10 mi (1,459.84 km) |
| Sarnen to Marco de Canavezes | 902.59 mi (1,452.58 km) |
| Sarnen to Marinha Grande | 991.58 mi (1,595.80 km) |
| Sarnen to Massama | 1,047.34 mi (1,685.52 km) |
| Sarnen to Matosinhos | 927.07 mi (1,491.97 km) |
| Sarnen to Mealhada | 945.65 mi (1,521.88 km) |
| Sarnen to Melgaco | 875.97 mi (1,409.74 km) |
| Sarnen to Melres | 917.89 mi (1,477.21 km) |
| Sarnen to Mira | 956.14 mi (1,538.76 km) |
| Sarnen to Miranda do Corvo | 951.66 mi (1,531.55 km) |
| Sarnen to Mirandela | 848.84 mi (1,366.07 km) |
| Sarnen to Mogadouro | 833.92 mi (1,342.07 km) |
| Sarnen to Moimenta da Beira | 886.39 mi (1,426.51 km) |
| Sarnen to Moita | 1,039.61 mi (1,673.10 km) |
| Sarnen to Moncao | 887.04 mi (1,427.56 km) |
