| Houghton Regis to Mangualde | 852.83 mi (1,372.50 km) |
| Houghton Regis to Marco de Canavezes | 823.54 mi (1,325.36 km) |
| Houghton Regis to Marinha Grande | 930.78 mi (1,497.95 km) |
| Houghton Regis to Massama | 1,001.19 mi (1,611.26 km) |
| Houghton Regis to Matosinhos | 835.20 mi (1,344.12 km) |
| Houghton Regis to Mealhada | 880.55 mi (1,417.11 km) |
| Houghton Regis to Melgaco | 767.32 mi (1,234.88 km) |
| Houghton Regis to Melres | 836.12 mi (1,345.61 km) |
| Houghton Regis to Mira | 883.21 mi (1,421.39 km) |
| Houghton Regis to Miranda do Corvo | 896.32 mi (1,442.49 km) |
| Houghton Regis to Mirandela | 785.15 mi (1,263.57 km) |
| Houghton Regis to Mogadouro | 786.55 mi (1,265.83 km) |
| Houghton Regis to Moimenta da Beira | 825.86 mi (1,329.10 km) |
| Houghton Regis to Moita | 1,002.25 mi (1,612.97 km) |
| Houghton Regis to Moncao | 774.78 mi (1,246.88 km) |
