| Decin to Marco de Canavezes | 1,253.55 mi (2,017.39 km) |
| Decin to Marinha Grande | 1,349.38 mi (2,171.62 km) |
| Decin to Massama | 1,409.47 mi (2,268.32 km) |
| Decin to Matosinhos | 1,275.70 mi (2,053.04 km) |
| Decin to Mealhada | 1,301.24 mi (2,094.15 km) |
| Decin to Melgaco | 1,218.32 mi (1,960.70 km) |
| Decin to Melres | 1,268.71 mi (2,041.80 km) |
| Decin to Mira | 1,310.25 mi (2,108.65 km) |
| Decin to Miranda do Corvo | 1,309.57 mi (2,107.55 km) |
| Decin to Mirandela | 1,201.51 mi (1,933.64 km) |
| Decin to Mogadouro | 1,189.77 mi (1,914.75 km) |
| Decin to Moimenta da Beira | 1,241.15 mi (1,997.43 km) |
| Decin to Moita | 1,403.27 mi (2,258.35 km) |
| Decin to Moncao | 1,228.86 mi (1,977.65 km) |
| Decin to Montalegre | 1,211.39 mi (1,949.54 km) |
