| Bithlo to Mangualde | 4,135.11 mi (6,654.82 km) |
| Bithlo to Marco de Canavezes | 4,106.29 mi (6,608.44 km) |
| Bithlo to Marinha Grande | 4,088.40 mi (6,579.64 km) |
| Bithlo to Massama | 4,086.49 mi (6,576.57 km) |
| Bithlo to Matosinhos | 4,078.38 mi (6,563.52 km) |
| Bithlo to Mealhada | 4,103.35 mi (6,603.71 km) |
| Bithlo to Melgaco | 4,086.49 mi (6,576.56 km) |
| Bithlo to Melres | 4,095.38 mi (6,590.87 km) |
| Bithlo to Mira | 4,088.05 mi (6,579.09 km) |
| Bithlo to Miranda do Corvo | 4,113.81 mi (6,620.54 km) |
| Bithlo to Mirandela | 4,150.57 mi (6,679.70 km) |
| Bithlo to Mogadouro | 4,176.44 mi (6,721.33 km) |
| Bithlo to Moimenta da Beira | 4,136.68 mi (6,657.34 km) |
| Bithlo to Moita | 4,103.51 mi (6,603.96 km) |
| Bithlo to Moncao | 4,076.42 mi (6,560.37 km) |
