| Merthyr Tudful to Farmersville (California) | 5,228.26 mi (8,414.07 km) |
| Merthyr Tudful to Farmington (Michigan) | 3,624.06 mi (5,832.36 km) |
| Merthyr Tudful to Farmington (Minnesota) | 3,896.22 mi (6,270.36 km) |
| Merthyr Tudful to Farmington (Missouri) | 4,116.87 mi (6,625.47 km) |
| Merthyr Tudful to Farmington (New Mexico) | 4,831.86 mi (7,776.13 km) |
| Merthyr Tudful to Farmington (Utah) | 4,733.03 mi (7,617.07 km) |
| Merthyr Tudful to Farmington Hills (Michigan) | 3,622.92 mi (5,830.53 km) |
| Merthyr Tudful to Farmingville (New York) | 3,278.08 mi (5,275.56 km) |
| Merthyr Tudful to Farragut (Tennessee) | 3,958.63 mi (6,370.80 km) |
| Merthyr Tudful to Fate (Texas) | 4,590.38 mi (7,387.50 km) |
| Merthyr Tudful to Fayetteville (Arkansas) | 4,346.34 mi (6,994.76 km) |
| Merthyr Tudful to Fayetteville (Georgia) | 4,086.72 mi (6,576.95 km) |
| Merthyr Tudful to Fayetteville (North Carolina) | 3,781.80 mi (6,086.22 km) |
| Merthyr Tudful to Federal Heights (Colorado) | 4,557.04 mi (7,333.84 km) |
| Merthyr Tudful to Federal Way (Washington) | 4,701.36 mi (7,566.12 km) |
