| Houghton Regis to Melzo | 632.41 mi (1,017.77 km) |
| Houghton Regis to Mendicino | 1,184.55 mi (1,906.35 km) |
| Houghton Regis to Menfi | 1,184.88 mi (1,906.89 km) |
| Houghton Regis to Mentana | 920.59 mi (1,481.55 km) |
| Houghton Regis to Merano | 637.61 mi (1,026.14 km) |
| Houghton Regis to Merate | 622.76 mi (1,002.24 km) |
| Houghton Regis to Mercato San Severino | 1,055.22 mi (1,698.22 km) |
| Houghton Regis to Mercogliano | 1,046.87 mi (1,684.77 km) |
| Houghton Regis to Mesagne | 1,168.95 mi (1,881.24 km) |
| Houghton Regis to Messina | 1,224.56 mi (1,970.74 km) |
| Houghton Regis to Mestre | 729.79 mi (1,174.49 km) |
| Houghton Regis to Mestrino | 714.84 mi (1,150.43 km) |
| Houghton Regis to Milan | 626.82 mi (1,008.77 km) |
| Houghton Regis to Milazzo | 1,213.60 mi (1,953.11 km) |
| Houghton Regis to Minerbio | 745.23 mi (1,199.34 km) |
