| Mentor to Mangualde | 3,704.61 mi (5,961.99 km) |
| Mentor to Marco de Canavezes | 3,668.39 mi (5,903.71 km) |
| Mentor to Marinha Grande | 3,676.57 mi (5,916.87 km) |
| Mentor to Massama | 3,692.10 mi (5,941.86 km) |
| Mentor to Matosinhos | 3,642.80 mi (5,862.52 km) |
| Mentor to Mealhada | 3,679.34 mi (5,921.32 km) |
| Mentor to Melgaco | 3,634.43 mi (5,849.06 km) |
| Mentor to Melres | 3,660.37 mi (5,890.79 km) |
| Mentor to Mira | 3,664.49 mi (5,897.42 km) |
| Mentor to Miranda do Corvo | 3,693.75 mi (5,944.51 km) |
| Mentor to Mirandela | 3,703.88 mi (5,960.82 km) |
| Mentor to Mogadouro | 3,730.12 mi (6,003.05 km) |
| Mentor to Moimenta da Beira | 3,699.67 mi (5,954.05 km) |
| Mentor to Moita | 3,709.44 mi (5,969.77 km) |
| Mentor to Moncao | 3,625.91 mi (5,835.34 km) |
