| Rhondda to Masanasa | 855.84 mi (1,377.34 km) |
| Rhondda to Masquefa | 741.09 mi (1,192.67 km) |
| Rhondda to Matadepera | 737.91 mi (1,187.55 km) |
| Rhondda to Mazarron | 973.93 mi (1,567.38 km) |
| Rhondda to Meco | 764.32 mi (1,230.06 km) |
| Rhondda to Medina del Campo | 716.28 mi (1,152.74 km) |
| Rhondda to Medina Sidonia | 1,053.88 mi (1,696.05 km) |
| Rhondda to Mejorada del Campo | 775.17 mi (1,247.52 km) |
| Rhondda to Meliana | 848.13 mi (1,364.93 km) |
| Rhondda to Mengibar | 943.15 mi (1,517.85 km) |
| Rhondda to Merida | 889.77 mi (1,431.94 km) |
| Rhondda to Miajadas | 870.70 mi (1,401.25 km) |
| Rhondda to Mieres | 588.31 mi (946.80 km) |
| Rhondda to Miguelturra | 874.35 mi (1,407.13 km) |
| Rhondda to Mijas | 1,039.21 mi (1,672.45 km) |
