| Merthyr Tudful to Foothill Farms (California) | 5,160.16 mi (8,304.47 km) |
| Merthyr Tudful to Fords (New Jersey) | 3,343.40 mi (5,380.68 km) |
| Merthyr Tudful to Forest (Virginia) | 3,688.35 mi (5,935.83 km) |
| Merthyr Tudful to Forest Acres (South Carolina) | 3,914.32 mi (6,299.49 km) |
| Merthyr Tudful to Forest City (Florida) | 4,195.79 mi (6,752.48 km) |
| Merthyr Tudful to Forest Grove (Oregon) | 4,823.28 mi (7,762.31 km) |
| Merthyr Tudful to Forest Hill (Texas) | 4,639.13 mi (7,465.97 km) |
| Merthyr Tudful to Forest Hills (Michigan) | 3,684.26 mi (5,929.25 km) |
| Merthyr Tudful to Forest Lake (Minnesota) | 3,861.09 mi (6,213.82 km) |
| Merthyr Tudful to Forest Park (Georgia) | 4,073.85 mi (6,556.23 km) |
| Merthyr Tudful to Forest Park (Illinois) | 3,823.27 mi (6,152.95 km) |
| Merthyr Tudful to Forest Park (Ohio) | 3,812.77 mi (6,136.05 km) |
| Merthyr Tudful to Forestville (Maryland) | 3,522.33 mi (5,668.64 km) |
| Merthyr Tudful to Forestville (Ohio) | 3,815.22 mi (6,140.01 km) |
| Merthyr Tudful to Forney (Texas) | 4,603.16 mi (7,408.07 km) |
