| Rhondda to Mancha Real | 955.57 mi (1,537.85 km) |
| Rhondda to Manilva | 1,056.32 mi (1,699.98 km) |
| Rhondda to Manises | 850.30 mi (1,368.43 km) |
| Rhondda to Manlleu | 716.47 mi (1,153.04 km) |
| Rhondda to Manresa | 726.69 mi (1,169.49 km) |
| Rhondda to Manzanares | 871.93 mi (1,403.23 km) |
| Rhondda to Manzanares el Real | 752.63 mi (1,211.24 km) |
| Rhondda to Maracena | 996.10 mi (1,603.06 km) |
| Rhondda to Marbella | 1,045.73 mi (1,682.94 km) |
| Rhondda to Marchena | 991.64 mi (1,595.89 km) |
| Rhondda to Marin | 683.65 mi (1,100.23 km) |
| Rhondda to Marratxi | 878.60 mi (1,413.97 km) |
| Rhondda to Martorell | 744.87 mi (1,198.75 km) |
| Rhondda to Martos | 960.71 mi (1,546.12 km) |
| Rhondda to Masamagrell | 845.35 mi (1,360.46 km) |
