| Solothurn to Mangualde | 885.57 mi (1,425.18 km) |
| Solothurn to Marco de Canavezes | 879.38 mi (1,415.22 km) |
| Solothurn to Marinha Grande | 970.47 mi (1,561.83 km) |
| Solothurn to Massama | 1,027.72 mi (1,653.96 km) |
| Solothurn to Matosinhos | 903.30 mi (1,453.72 km) |
| Solothurn to Mealhada | 923.81 mi (1,486.73 km) |
| Solothurn to Melgaco | 850.60 mi (1,368.91 km) |
| Solothurn to Melres | 894.67 mi (1,439.83 km) |
| Solothurn to Mira | 933.88 mi (1,502.94 km) |
| Solothurn to Miranda do Corvo | 930.53 mi (1,497.54 km) |
| Solothurn to Mirandela | 825.98 mi (1,329.29 km) |
| Solothurn to Mogadouro | 811.96 mi (1,306.72 km) |
| Solothurn to Moimenta da Beira | 864.20 mi (1,390.80 km) |
| Solothurn to Moita | 1,020.54 mi (1,642.40 km) |
| Solothurn to Moncao | 861.58 mi (1,386.58 km) |
