| Boo to Mangualde | 1,712.38 mi (2,755.81 km) |
| Boo to Marco de Canavezes | 1,689.72 mi (2,719.33 km) |
| Boo to Marinha Grande | 1,795.30 mi (2,889.25 km) |
| Boo to Massama | 1,863.27 mi (2,998.65 km) |
| Boo to Matosinhos | 1,705.47 mi (2,744.69 km) |
| Boo to Mealhada | 1,744.66 mi (2,807.76 km) |
| Boo to Melgaco | 1,639.51 mi (2,638.54 km) |
| Boo to Melres | 1,703.59 mi (2,741.66 km) |
| Boo to Mira | 1,749.79 mi (2,816.01 km) |
| Boo to Miranda do Corvo | 1,757.91 mi (2,829.09 km) |
| Boo to Mirandela | 1,644.82 mi (2,647.09 km) |
| Boo to Mogadouro | 1,640.68 mi (2,640.43 km) |
| Boo to Moimenta da Beira | 1,686.34 mi (2,713.91 km) |
| Boo to Moita | 1,861.45 mi (2,995.71 km) |
| Boo to Moncao | 1,648.18 mi (2,652.49 km) |
