| Altamont to Mangualde | 5,386.03 mi (8,667.98 km) |
| Altamont to Marco de Canavezes | 5,343.13 mi (8,598.93 km) |
| Altamont to Marinha Grande | 5,385.42 mi (8,667.00 km) |
| Altamont to Massama | 5,421.76 mi (8,725.48 km) |
| Altamont to Matosinhos | 5,323.17 mi (8,566.82 km) |
| Altamont to Mealhada | 5,371.88 mi (8,645.21 km) |
| Altamont to Melgaco | 5,292.70 mi (8,517.78 km) |
| Altamont to Melres | 5,339.84 mi (8,593.65 km) |
| Altamont to Mira | 5,359.01 mi (8,624.50 km) |
| Altamont to Miranda do Corvo | 5,390.22 mi (8,674.73 km) |
| Altamont to Mirandela | 5,362.89 mi (8,630.75 km) |
| Altamont to Mogadouro | 5,387.10 mi (8,669.70 km) |
| Altamont to Moimenta da Beira | 5,372.64 mi (8,646.43 km) |
| Altamont to Moita | 5,438.01 mi (8,751.63 km) |
| Altamont to Moncao | 5,287.20 mi (8,508.92 km) |
