| Deal to Mangualde | 854.21 mi (1,374.72 km) |
| Deal to Marco de Canavezes | 828.98 mi (1,334.11 km) |
| Deal to Marinha Grande | 935.48 mi (1,505.51 km) |
| Deal to Massama | 1,004.62 mi (1,616.79 km) |
| Deal to Matosinhos | 843.55 mi (1,357.57 km) |
| Deal to Mealhada | 884.83 mi (1,423.99 km) |
| Deal to Melgaco | 776.99 mi (1,250.45 km) |
| Deal to Melres | 842.48 mi (1,355.84 km) |
| Deal to Mira | 889.10 mi (1,430.87 km) |
| Deal to Miranda do Corvo | 899.10 mi (1,446.96 km) |
| Deal to Mirandela | 786.28 mi (1,265.40 km) |
| Deal to Mogadouro | 784.48 mi (1,262.50 km) |
| Deal to Moimenta da Beira | 827.68 mi (1,332.02 km) |
| Deal to Moita | 1,004.02 mi (1,615.82 km) |
| Deal to Moncao | 785.44 mi (1,264.05 km) |
