| Bilbao to Mangualde | 308.82 mi (497.00 km) |
| Bilbao to Marco de Canavezes | 303.31 mi (488.12 km) |
| Bilbao to Marinha Grande | 394.05 mi (634.16 km) |
| Bilbao to Massama | 453.99 mi (730.62 km) |
| Bilbao to Matosinhos | 328.36 mi (528.45 km) |
| Bilbao to Mealhada | 346.86 mi (558.21 km) |
| Bilbao to Melgaco | 282.51 mi (454.66 km) |
| Bilbao to Melres | 318.60 mi (512.74 km) |
| Bilbao to Mira | 356.91 mi (574.39 km) |
| Bilbao to Miranda do Corvo | 354.15 mi (569.94 km) |
| Bilbao to Mirandela | 249.41 mi (401.38 km) |
| Bilbao to Mogadouro | 235.00 mi (378.20 km) |
| Bilbao to Moimenta da Beira | 287.21 mi (462.22 km) |
| Bilbao to Moita | 448.43 mi (721.68 km) |
| Bilbao to Moncao | 293.84 mi (472.89 km) |
