| Merthyr Tudful to Alcorcon | 787.48 mi (1,267.32 km) |
| Merthyr Tudful to Alcoy | 912.12 mi (1,467.92 km) |
| Merthyr Tudful to Alcudia | 878.28 mi (1,413.46 km) |
| Merthyr Tudful to Aldaya | 859.84 mi (1,383.78 km) |
| Merthyr Tudful to Alella | 756.94 mi (1,218.17 km) |
| Merthyr Tudful to Alfafar | 863.26 mi (1,389.28 km) |
| Merthyr Tudful to Alfaro | 665.26 mi (1,070.63 km) |
| Merthyr Tudful to Algeciras | 1,083.74 mi (1,744.12 km) |
| Merthyr Tudful to Algemesi | 878.78 mi (1,414.26 km) |
| Merthyr Tudful to Algete | 770.08 mi (1,239.32 km) |
| Merthyr Tudful to Alginet | 873.57 mi (1,405.87 km) |
| Merthyr Tudful to Alguazas | 951.65 mi (1,531.53 km) |
| Merthyr Tudful to Alhama de Murcia | 964.48 mi (1,552.18 km) |
| Merthyr Tudful to Alhaurin de la Torre | 1,043.25 mi (1,678.95 km) |
| Merthyr Tudful to Alhaurin el Grande | 1,045.95 mi (1,683.29 km) |
