| Americus to Mangualde | 4,163.05 mi (6,699.78 km) |
| Americus to Marco de Canavezes | 4,131.29 mi (6,648.67 km) |
| Americus to Marinha Grande | 4,122.88 mi (6,635.13 km) |
| Americus to Massama | 4,127.29 mi (6,642.23 km) |
| Americus to Matosinhos | 4,104.05 mi (6,604.83 km) |
| Americus to Mealhada | 4,133.47 mi (6,652.18 km) |
| Americus to Melgaco | 4,106.06 mi (6,608.06 km) |
| Americus to Melres | 4,121.37 mi (6,632.71 km) |
| Americus to Mira | 4,118.23 mi (6,627.65 km) |
| Americus to Miranda do Corvo | 4,145.45 mi (6,671.46 km) |
| Americus to Mirandela | 4,172.59 mi (6,715.13 km) |
| Americus to Mogadouro | 4,198.76 mi (6,757.26 km) |
| Americus to Moimenta da Beira | 4,162.21 mi (6,698.43 km) |
| Americus to Moita | 4,144.54 mi (6,670.00 km) |
| Americus to Moncao | 4,096.50 mi (6,592.68 km) |
