| Progress to Mangualde | 3,532.19 mi (5,684.51 km) |
| Progress to Marco de Canavezes | 3,497.63 mi (5,628.88 km) |
| Progress to Marinha Grande | 3,499.45 mi (5,631.83 km) |
| Progress to Massama | 3,510.97 mi (5,650.36 km) |
| Progress to Matosinhos | 3,471.31 mi (5,586.53 km) |
| Progress to Mealhada | 3,505.18 mi (5,641.05 km) |
| Progress to Melgaco | 3,467.09 mi (5,579.74 km) |
| Progress to Melres | 3,488.83 mi (5,614.73 km) |
| Progress to Mira | 3,490.14 mi (5,616.84 km) |
| Progress to Miranda do Corvo | 3,518.71 mi (5,662.81 km) |
| Progress to Mirandela | 3,535.54 mi (5,689.90 km) |
| Progress to Mogadouro | 3,561.82 mi (5,732.20 km) |
| Progress to Moimenta da Beira | 3,528.85 mi (5,679.13 km) |
| Progress to Moita | 3,528.33 mi (5,678.30 km) |
| Progress to Moncao | 3,458.12 mi (5,565.30 km) |
