| Merthyr Tudful to Aldine (Texas) | 4,705.86 mi (7,573.36 km) |
| Merthyr Tudful to Alexander City (Alabama) | 4,172.48 mi (6,714.96 km) |
| Merthyr Tudful to Alexandria (Louisiana) | 4,518.88 mi (7,272.43 km) |
| Merthyr Tudful to Alexandria (Minnesota) | 3,919.34 mi (6,307.56 km) |
| Merthyr Tudful to Alexandria (Virginia) | 3,532.67 mi (5,685.28 km) |
| Merthyr Tudful to Algonquin (Illinois) | 3,829.02 mi (6,162.22 km) |
| Merthyr Tudful to Alhambra (California) | 5,318.78 mi (8,559.76 km) |
| Merthyr Tudful to Alice (Texas) | 4,925.11 mi (7,926.20 km) |
| Merthyr Tudful to Aliso Viejo (California) | 5,333.77 mi (8,583.87 km) |
| Merthyr Tudful to Allen (Texas) | 4,593.16 mi (7,391.97 km) |
| Merthyr Tudful to Allen Park (Michigan) | 3,626.40 mi (5,836.13 km) |
| Merthyr Tudful to Allendale (Michigan) | 3,700.85 mi (5,955.94 km) |
| Merthyr Tudful to Allentown (Pennsylvania) | 3,388.50 mi (5,453.27 km) |
| Merthyr Tudful to Alliance (Ohio) | 3,603.20 mi (5,798.79 km) |
| Merthyr Tudful to Allison Park (Pennsylvania) | 3,571.66 mi (5,748.03 km) |
