| Merthyr Tudful to Westland (Michigan) | 3,630.43 mi (5,842.61 km) |
| Merthyr Tudful to Westminster (California) | 5,332.81 mi (8,582.33 km) |
| Merthyr Tudful to Westminster (Colorado) | 4,557.73 mi (7,334.96 km) |
| Merthyr Tudful to Westminster (Maryland) | 3,495.61 mi (5,625.64 km) |
| Merthyr Tudful to Westmont (California) | 5,332.31 mi (8,581.52 km) |
| Merthyr Tudful to Westmont (Illinois) | 3,832.74 mi (6,168.20 km) |
| Merthyr Tudful to Westmont (New Jersey) | 3,401.10 mi (5,473.54 km) |
| Merthyr Tudful to Weston (Florida) | 4,280.11 mi (6,888.18 km) |
| Merthyr Tudful to Weston (Wisconsin) | 3,752.04 mi (6,038.33 km) |
| Merthyr Tudful to Westphalia (Maryland) | 3,521.37 mi (5,667.09 km) |
| Merthyr Tudful to Westview (Florida) | 4,284.16 mi (6,894.69 km) |
| Merthyr Tudful to Westwood (New Jersey) | 3,312.47 mi (5,330.91 km) |
| Merthyr Tudful to Westwood Lakes (Florida) | 4,297.71 mi (6,916.49 km) |
| Merthyr Tudful to Wheat Ridge (Colorado) | 4,564.88 mi (7,346.47 km) |
| Merthyr Tudful to Wheaton (Illinois) | 3,835.11 mi (6,172.01 km) |
