| Marsa to Marco de Canavezes | 1,273.30 mi (2,049.18 km) |
| Marsa to Marinha Grande | 1,302.38 mi (2,095.98 km) |
| Marsa to Massama | 1,317.26 mi (2,119.93 km) |
| Marsa to Matosinhos | 1,301.55 mi (2,094.64 km) |
| Marsa to Mealhada | 1,281.16 mi (2,061.82 km) |
| Marsa to Melgaco | 1,291.13 mi (2,077.87 km) |
| Marsa to Melres | 1,284.89 mi (2,067.83 km) |
| Marsa to Mira | 1,296.36 mi (2,086.29 km) |
| Marsa to Miranda do Corvo | 1,272.89 mi (2,048.52 km) |
| Marsa to Mirandela | 1,227.61 mi (1,975.64 km) |
| Marsa to Mogadouro | 1,201.92 mi (1,934.30 km) |
| Marsa to Moimenta da Beira | 1,243.46 mi (2,001.16 km) |
| Marsa to Moita | 1,301.39 mi (2,094.39 km) |
| Marsa to Moncao | 1,301.23 mi (2,094.12 km) |
| Marsa to Montalegre | 1,263.10 mi (2,032.77 km) |
