| Roman to Mangualde | 1,769.59 mi (2,847.88 km) |
| Roman to Marco de Canavezes | 1,770.77 mi (2,849.79 km) |
| Roman to Marinha Grande | 1,851.39 mi (2,979.53 km) |
| Roman to Massama | 1,900.01 mi (3,057.76 km) |
| Roman to Matosinhos | 1,796.72 mi (2,891.55 km) |
| Roman to Mealhada | 1,808.81 mi (2,911.00 km) |
| Roman to Melgaco | 1,750.08 mi (2,816.49 km) |
| Roman to Melres | 1,785.97 mi (2,874.24 km) |
| Roman to Mira | 1,820.64 mi (2,930.04 km) |
| Roman to Miranda do Corvo | 1,812.07 mi (2,916.25 km) |
| Roman to Mirandela | 1,716.41 mi (2,762.30 km) |
| Roman to Mogadouro | 1,698.81 mi (2,733.98 km) |
| Roman to Moimenta da Beira | 1,751.42 mi (2,818.64 km) |
| Roman to Moita | 1,889.89 mi (3,041.49 km) |
| Roman to Moncao | 1,761.32 mi (2,834.57 km) |
