| Merthyr Tudful to West Memphis (Arkansas) | 4,235.61 mi (6,816.55 km) |
| Merthyr Tudful to West Mifflin (Pennsylvania) | 3,579.05 mi (5,759.92 km) |
| Merthyr Tudful to West Monroe (Louisiana) | 4,444.60 mi (7,152.89 km) |
| Merthyr Tudful to West New York (New Jersey) | 3,320.22 mi (5,343.38 km) |
| Merthyr Tudful to West Odessa (Texas) | 4,883.52 mi (7,859.26 km) |
| Merthyr Tudful to West Palm Beach (Florida) | 4,236.00 mi (6,817.19 km) |
| Merthyr Tudful to West Park (Florida) | 4,276.95 mi (6,883.09 km) |
| Merthyr Tudful to West Pensacola (Florida) | 4,350.62 mi (7,001.64 km) |
| Merthyr Tudful to West Plains (Missouri) | 4,223.92 mi (6,797.74 km) |
| Merthyr Tudful to West Point (Utah) | 4,731.99 mi (7,615.41 km) |
| Merthyr Tudful to West Puente Valley (California) | 5,315.09 mi (8,553.82 km) |
| Merthyr Tudful to West Rancho Dominguez (California) | 5,333.24 mi (8,583.01 km) |
| Merthyr Tudful to West Richland (Washington) | 4,674.54 mi (7,522.94 km) |
| Merthyr Tudful to West Sacramento (California) | 5,173.82 mi (8,326.46 km) |
| Merthyr Tudful to West Springfield (Virginia) | 3,540.30 mi (5,697.56 km) |
