| Billdal to Mangualde | 1,461.72 mi (2,352.40 km) |
| Billdal to Marco de Canavezes | 1,437.63 mi (2,313.64 km) |
| Billdal to Marinha Grande | 1,543.81 mi (2,484.52 km) |
| Billdal to Massama | 1,612.46 mi (2,595.01 km) |
| Billdal to Matosinhos | 1,452.57 mi (2,337.69 km) |
| Billdal to Mealhada | 1,493.14 mi (2,402.97 km) |
| Billdal to Melgaco | 1,386.08 mi (2,230.68 km) |
| Billdal to Melres | 1,451.27 mi (2,335.59 km) |
| Billdal to Mira | 1,497.76 mi (2,410.41 km) |
| Billdal to Miranda do Corvo | 1,506.95 mi (2,425.20 km) |
| Billdal to Mirandela | 1,393.92 mi (2,243.30 km) |
| Billdal to Mogadouro | 1,390.86 mi (2,238.37 km) |
| Billdal to Moimenta da Beira | 1,435.41 mi (2,310.07 km) |
| Billdal to Moita | 1,611.26 mi (2,593.07 km) |
| Billdal to Moncao | 1,394.52 mi (2,244.26 km) |
