| Belley to Marco de Canavezes | 761.16 mi (1,224.97 km) |
| Belley to Marinha Grande | 848.21 mi (1,365.06 km) |
| Belley to Massama | 903.06 mi (1,453.33 km) |
| Belley to Matosinhos | 786.22 mi (1,265.29 km) |
| Belley to Mealhada | 802.88 mi (1,292.11 km) |
| Belley to Melgaco | 737.31 mi (1,186.59 km) |
| Belley to Melres | 776.45 mi (1,249.58 km) |
| Belley to Mira | 813.70 mi (1,309.53 km) |
| Belley to Miranda do Corvo | 808.34 mi (1,300.89 km) |
| Belley to Mirandela | 707.12 mi (1,137.99 km) |
| Belley to Mogadouro | 691.39 mi (1,112.68 km) |
| Belley to Moimenta da Beira | 743.98 mi (1,197.33 km) |
| Belley to Moita | 895.11 mi (1,440.53 km) |
| Belley to Moncao | 748.50 mi (1,204.59 km) |
| Belley to Montalegre | 724.09 mi (1,165.31 km) |
