| Heiloo to Masquefa | 778.60 mi (1,253.04 km) |
| Heiloo to Matadepera | 770.11 mi (1,239.38 km) |
| Heiloo to Mazarron | 1,076.49 mi (1,732.45 km) |
| Heiloo to Meco | 914.42 mi (1,471.62 km) |
| Heiloo to Medina del Campo | 901.55 mi (1,450.90 km) |
| Heiloo to Medina Sidonia | 1,228.56 mi (1,977.17 km) |
| Heiloo to Mejorada del Campo | 925.67 mi (1,489.73 km) |
| Heiloo to Meliana | 934.73 mi (1,504.31 km) |
| Heiloo to Mengibar | 1,090.80 mi (1,755.47 km) |
| Heiloo to Merida | 1,083.39 mi (1,743.55 km) |
| Heiloo to Miajadas | 1,061.64 mi (1,708.55 km) |
| Heiloo to Mieres | 806.53 mi (1,297.99 km) |
| Heiloo to Miguelturra | 1,028.63 mi (1,655.42 km) |
| Heiloo to Mijas | 1,195.01 mi (1,923.19 km) |
| Heiloo to Miranda de Ebro | 771.19 mi (1,241.11 km) |
