| Lower Burrell to Mangualde | 3,660.93 mi (5,891.70 km) |
| Lower Burrell to Marco de Canavezes | 3,625.62 mi (5,834.87 km) |
| Lower Burrell to Marinha Grande | 3,630.24 mi (5,842.30 km) |
| Lower Burrell to Massama | 3,643.49 mi (5,863.63 km) |
| Lower Burrell to Matosinhos | 3,599.61 mi (5,793.02 km) |
| Lower Burrell to Mealhada | 3,634.68 mi (5,849.45 km) |
| Lower Burrell to Melgaco | 3,593.54 mi (5,783.24 km) |
| Lower Burrell to Melres | 3,617.16 mi (5,821.26 km) |
| Lower Burrell to Mira | 3,619.71 mi (5,825.36 km) |
| Lower Burrell to Miranda do Corvo | 3,648.60 mi (5,871.85 km) |
| Lower Burrell to Mirandela | 3,662.47 mi (5,894.18 km) |
| Lower Burrell to Mogadouro | 3,688.75 mi (5,936.46 km) |
| Lower Burrell to Moimenta da Beira | 3,656.88 mi (5,885.18 km) |
| Lower Burrell to Moita | 3,660.85 mi (5,891.57 km) |
| Lower Burrell to Moncao | 3,584.77 mi (5,769.12 km) |
