| Broxbourne to Mangualde | 853.32 mi (1,373.28 km) |
| Broxbourne to Marco de Canavezes | 825.01 mi (1,327.73 km) |
| Broxbourne to Marinha Grande | 932.19 mi (1,500.22 km) |
| Broxbourne to Massama | 1,002.35 mi (1,613.12 km) |
| Broxbourne to Matosinhos | 837.43 mi (1,347.71 km) |
| Broxbourne to Mealhada | 881.80 mi (1,419.12 km) |
| Broxbourne to Melgaco | 769.79 mi (1,238.86 km) |
| Broxbourne to Melres | 837.85 mi (1,348.39 km) |
| Broxbourne to Mira | 884.87 mi (1,424.07 km) |
| Broxbourne to Miranda do Corvo | 897.21 mi (1,443.92 km) |
| Broxbourne to Mirandela | 785.48 mi (1,264.11 km) |
| Broxbourne to Mogadouro | 786.08 mi (1,265.07 km) |
| Broxbourne to Moimenta da Beira | 826.43 mi (1,330.01 km) |
| Broxbourne to Moita | 1,002.99 mi (1,614.16 km) |
| Broxbourne to Moncao | 777.51 mi (1,251.29 km) |
