| Humacao to Mangualde | 3,747.43 mi (6,030.91 km) |
| Humacao to Marco de Canavezes | 3,731.97 mi (6,006.03 km) |
| Humacao to Marinha Grande | 3,679.25 mi (5,921.18 km) |
| Humacao to Massama | 3,653.47 mi (5,879.70 km) |
| Humacao to Matosinhos | 3,703.60 mi (5,960.37 km) |
| Humacao to Mealhada | 3,709.72 mi (5,970.22 km) |
| Humacao to Melgaco | 3,734.40 mi (6,009.94 km) |
| Humacao to Melres | 3,718.06 mi (5,983.63 km) |
| Humacao to Mira | 3,695.34 mi (5,947.07 km) |
| Humacao to Miranda do Corvo | 3,713.59 mi (5,976.44 km) |
| Humacao to Mirandela | 3,784.34 mi (6,090.31 km) |
| Humacao to Mogadouro | 3,807.12 mi (6,126.96 km) |
| Humacao to Moimenta da Beira | 3,758.03 mi (6,047.97 km) |
| Humacao to Moita | 3,668.34 mi (5,903.62 km) |
| Humacao to Moncao | 3,723.16 mi (5,991.84 km) |
