| Mountain Top to Mangualde | 3,463.79 mi (5,574.43 km) |
| Mountain Top to Marco de Canavezes | 3,428.92 mi (5,518.31 km) |
| Mountain Top to Marinha Grande | 3,431.95 mi (5,523.19 km) |
| Mountain Top to Massama | 3,444.30 mi (5,543.06 km) |
| Mountain Top to Matosinhos | 3,402.72 mi (5,476.16 km) |
| Mountain Top to Mealhada | 3,437.10 mi (5,531.48 km) |
| Mountain Top to Melgaco | 3,397.77 mi (5,468.19 km) |
| Mountain Top to Melres | 3,420.26 mi (5,504.38 km) |
| Mountain Top to Mira | 3,422.09 mi (5,507.33 km) |
| Mountain Top to Miranda do Corvo | 3,450.80 mi (5,553.53 km) |
| Mountain Top to Mirandela | 3,466.41 mi (5,578.65 km) |
| Mountain Top to Mogadouro | 3,492.69 mi (5,620.95 km) |
| Mountain Top to Moimenta da Beira | 3,460.16 mi (5,568.59 km) |
| Mountain Top to Moita | 3,461.66 mi (5,571.00 km) |
| Mountain Top to Moncao | 3,388.87 mi (5,453.87 km) |
