| Serinhisar to Mangualde | 1,982.08 mi (3,189.84 km) |
| Serinhisar to Marco de Canavezes | 1,998.31 mi (3,215.97 km) |
| Serinhisar to Marinha Grande | 2,050.85 mi (3,300.52 km) |
| Serinhisar to Massama | 2,079.78 mi (3,347.08 km) |
| Serinhisar to Matosinhos | 2,026.78 mi (3,261.79 km) |
| Serinhisar to Mealhada | 2,019.77 mi (3,250.51 km) |
| Serinhisar to Melgaco | 1,999.28 mi (3,217.53 km) |
| Serinhisar to Melres | 2,012.03 mi (3,238.04 km) |
| Serinhisar to Mira | 2,034.15 mi (3,273.65 km) |
| Serinhisar to Miranda do Corvo | 2,016.08 mi (3,244.57 km) |
| Serinhisar to Mirandela | 1,946.52 mi (3,132.62 km) |
| Serinhisar to Mogadouro | 1,923.26 mi (3,095.19 km) |
| Serinhisar to Moimenta da Beira | 1,971.80 mi (3,173.30 km) |
| Serinhisar to Moita | 2,065.60 mi (3,324.26 km) |
| Serinhisar to Moncao | 2,010.39 mi (3,235.41 km) |
