| Modra to Mangualde | 1,338.69 mi (2,154.41 km) |
| Modra to Marco de Canavezes | 1,335.42 mi (2,149.15 km) |
| Modra to Marinha Grande | 1,422.61 mi (2,289.48 km) |
| Modra to Massama | 1,476.37 mi (2,375.98 km) |
| Modra to Matosinhos | 1,360.14 mi (2,188.94 km) |
| Modra to Mealhada | 1,377.47 mi (2,216.83 km) |
| Modra to Melgaco | 1,309.32 mi (2,107.15 km) |
| Modra to Melres | 1,350.72 mi (2,173.77 km) |
| Modra to Mira | 1,388.29 mi (2,234.24 km) |
| Modra to Miranda do Corvo | 1,382.78 mi (2,225.37 km) |
| Modra to Mirandela | 1,281.50 mi (2,062.37 km) |
| Modra to Mogadouro | 1,265.98 mi (2,037.39 km) |
| Modra to Moimenta da Beira | 1,318.56 mi (2,122.02 km) |
| Modra to Moita | 1,467.84 mi (2,362.26 km) |
| Modra to Moncao | 1,320.39 mi (2,124.96 km) |
