| Plum to Mangualde | 3,664.96 mi (5,898.18 km) |
| Plum to Marco de Canavezes | 3,629.68 mi (5,841.41 km) |
| Plum to Marinha Grande | 3,634.16 mi (5,848.61 km) |
| Plum to Massama | 3,647.31 mi (5,869.78 km) |
| Plum to Matosinhos | 3,603.66 mi (5,799.53 km) |
| Plum to Mealhada | 3,638.67 mi (5,855.87 km) |
| Plum to Melgaco | 3,597.68 mi (5,789.90 km) |
| Plum to Melres | 3,621.21 mi (5,827.78 km) |
| Plum to Mira | 3,623.70 mi (5,831.78 km) |
| Plum to Miranda do Corvo | 3,652.56 mi (5,878.23 km) |
| Plum to Mirandela | 3,666.59 mi (5,900.80 km) |
| Plum to Mogadouro | 3,692.86 mi (5,943.09 km) |
| Plum to Moimenta da Beira | 3,660.95 mi (5,891.72 km) |
| Plum to Moita | 3,664.67 mi (5,897.72 km) |
| Plum to Moncao | 3,588.89 mi (5,775.77 km) |
