| Martinsicuro to Marco de Canavezes | 1,135.24 mi (1,826.99 km) |
| Martinsicuro to Marinha Grande | 1,201.50 mi (1,933.63 km) |
| Martinsicuro to Massama | 1,241.39 mi (1,997.83 km) |
| Martinsicuro to Matosinhos | 1,163.07 mi (1,871.78 km) |
| Martinsicuro to Mealhada | 1,164.35 mi (1,873.85 km) |
| Martinsicuro to Melgaco | 1,128.01 mi (1,815.36 km) |
| Martinsicuro to Melres | 1,149.77 mi (1,850.38 km) |
| Martinsicuro to Mira | 1,177.76 mi (1,895.41 km) |
| Martinsicuro to Miranda do Corvo | 1,163.95 mi (1,873.20 km) |
| Martinsicuro to Mirandela | 1,081.64 mi (1,740.73 km) |
| Martinsicuro to Mogadouro | 1,060.37 mi (1,706.50 km) |
| Martinsicuro to Moimenta da Beira | 1,111.40 mi (1,788.62 km) |
| Martinsicuro to Moita | 1,229.34 mi (1,978.43 km) |
| Martinsicuro to Moncao | 1,139.31 mi (1,833.54 km) |
| Martinsicuro to Montalegre | 1,107.78 mi (1,782.80 km) |
