| Downham Market to Mangualde | 913.32 mi (1,469.85 km) |
| Downham Market to Marco de Canavezes | 884.47 mi (1,423.41 km) |
| Downham Market to Marinha Grande | 991.70 mi (1,595.98 km) |
| Downham Market to Massama | 1,062.00 mi (1,709.13 km) |
| Downham Market to Matosinhos | 896.40 mi (1,442.62 km) |
| Downham Market to Mealhada | 941.39 mi (1,515.02 km) |
| Downham Market to Melgaco | 828.59 mi (1,333.49 km) |
| Downham Market to Melres | 897.15 mi (1,443.83 km) |
| Downham Market to Mira | 944.22 mi (1,519.58 km) |
| Downham Market to Miranda do Corvo | 957.01 mi (1,540.16 km) |
| Downham Market to Mirandela | 845.56 mi (1,360.79 km) |
| Downham Market to Mogadouro | 846.51 mi (1,362.33 km) |
| Downham Market to Moimenta da Beira | 886.39 mi (1,426.51 km) |
| Downham Market to Moita | 1,062.88 mi (1,710.54 km) |
| Downham Market to Moncao | 836.13 mi (1,345.62 km) |
