| Lake Grove to Mangualde | 3,337.31 mi (5,370.89 km) |
| Lake Grove to Marco de Canavezes | 3,303.16 mi (5,315.92 km) |
| Lake Grove to Marinha Grande | 3,303.55 mi (5,316.56 km) |
| Lake Grove to Massama | 3,314.27 mi (5,333.81 km) |
| Lake Grove to Matosinhos | 3,276.68 mi (5,273.31 km) |
| Lake Grove to Mealhada | 3,309.92 mi (5,326.81 km) |
| Lake Grove to Melgaco | 3,273.49 mi (5,268.17 km) |
| Lake Grove to Melres | 3,294.18 mi (5,301.48 km) |
| Lake Grove to Mira | 3,294.85 mi (5,302.54 km) |
| Lake Grove to Miranda do Corvo | 3,323.25 mi (5,348.25 km) |
| Lake Grove to Mirandela | 3,341.64 mi (5,377.86 km) |
| Lake Grove to Mogadouro | 3,367.93 mi (5,420.15 km) |
| Lake Grove to Moimenta da Beira | 3,334.35 mi (5,366.12 km) |
| Lake Grove to Moita | 3,331.63 mi (5,361.75 km) |
| Lake Grove to Moncao | 3,264.41 mi (5,253.56 km) |
