| Merthyr Tudful to Ames | 658.28 mi (1,059.40 km) |
| Merthyr Tudful to Amorebieta | 589.70 mi (949.03 km) |
| Merthyr Tudful to Amposta | 785.09 mi (1,263.49 km) |
| Merthyr Tudful to Amurrio | 600.69 mi (966.72 km) |
| Merthyr Tudful to Andoain | 592.50 mi (953.54 km) |
| Merthyr Tudful to Andraitx | 885.45 mi (1,425.00 km) |
| Merthyr Tudful to Andujar | 947.40 mi (1,524.70 km) |
| Merthyr Tudful to Antequera | 1,019.01 mi (1,639.95 km) |
| Merthyr Tudful to Antigua | 1,702.82 mi (2,740.42 km) |
| Merthyr Tudful to Aranda de Duero | 695.21 mi (1,118.83 km) |
| Merthyr Tudful to Aranjuez | 809.13 mi (1,302.17 km) |
| Merthyr Tudful to Archena | 946.98 mi (1,524.01 km) |
| Merthyr Tudful to Arcos de la Frontera | 1,042.68 mi (1,678.03 km) |
| Merthyr Tudful to Arenys de Mar | 755.63 mi (1,216.06 km) |
| Merthyr Tudful to Arenys de Munt | 753.44 mi (1,212.55 km) |
