| Thornton Heath to Masanasa | 828.68 mi (1,333.63 km) |
| Thornton Heath to Masquefa | 689.82 mi (1,110.16 km) |
| Thornton Heath to Matadepera | 684.36 mi (1,101.37 km) |
| Thornton Heath to Mazarron | 955.43 mi (1,537.62 km) |
| Thornton Heath to Meco | 764.97 mi (1,231.09 km) |
| Thornton Heath to Medina del Campo | 734.15 mi (1,181.51 km) |
| Thornton Heath to Medina Sidonia | 1,070.66 mi (1,723.06 km) |
| Thornton Heath to Mejorada del Campo | 776.22 mi (1,249.20 km) |
| Thornton Heath to Meliana | 820.43 mi (1,320.35 km) |
| Thornton Heath to Mengibar | 945.37 mi (1,521.43 km) |
| Thornton Heath to Merida | 914.56 mi (1,471.85 km) |
| Thornton Heath to Miajadas | 893.86 mi (1,438.53 km) |
| Thornton Heath to Mieres | 622.05 mi (1,001.09 km) |
| Thornton Heath to Miguelturra | 878.88 mi (1,414.43 km) |
| Thornton Heath to Mijas | 1,046.51 mi (1,684.20 km) |
