| Grad to Mangualde | 1,260.36 mi (2,028.36 km) |
| Grad to Marco de Canavezes | 1,260.35 mi (2,028.33 km) |
| Grad to Marinha Grande | 1,342.96 mi (2,161.29 km) |
| Grad to Massama | 1,393.63 mi (2,242.83 km) |
| Grad to Matosinhos | 1,286.06 mi (2,069.71 km) |
| Grad to Mealhada | 1,299.49 mi (2,091.33 km) |
| Grad to Melgaco | 1,238.80 mi (1,993.65 km) |
| Grad to Melres | 1,275.58 mi (2,052.84 km) |
| Grad to Mira | 1,311.04 mi (2,109.91 km) |
| Grad to Miranda do Corvo | 1,303.42 mi (2,097.65 km) |
| Grad to Mirandela | 1,206.04 mi (1,940.93 km) |
| Grad to Mogadouro | 1,188.95 mi (1,913.42 km) |
| Grad to Moimenta da Beira | 1,241.60 mi (1,998.17 km) |
| Grad to Moita | 1,384.19 mi (2,227.63 km) |
| Grad to Moncao | 1,250.02 mi (2,011.72 km) |
