| Lake Shore to Mangualde | 3,549.51 mi (5,712.39 km) |
| Lake Shore to Marco de Canavezes | 3,515.73 mi (5,658.01 km) |
| Lake Shore to Marinha Grande | 3,514.67 mi (5,656.31 km) |
| Lake Shore to Massama | 3,524.29 mi (5,671.79 km) |
| Lake Shore to Matosinhos | 3,489.12 mi (5,615.19 km) |
| Lake Shore to Mealhada | 3,521.75 mi (5,667.71 km) |
| Lake Shore to Melgaco | 3,486.73 mi (5,611.35 km) |
| Lake Shore to Melres | 3,506.60 mi (5,643.33 km) |
| Lake Shore to Mira | 3,506.64 mi (5,643.39 km) |
| Lake Shore to Miranda do Corvo | 3,534.86 mi (5,688.81 km) |
| Lake Shore to Mirandela | 3,554.66 mi (5,720.68 km) |
| Lake Shore to Mogadouro | 3,580.94 mi (5,762.97 km) |
| Lake Shore to Moimenta da Beira | 3,546.89 mi (5,708.17 km) |
| Lake Shore to Moita | 3,541.64 mi (5,699.72 km) |
| Lake Shore to Moncao | 3,477.58 mi (5,596.62 km) |
