| Merthyr Tudful to Hicksville (New York) | 3,301.22 mi (5,312.81 km) |
| Merthyr Tudful to Hidalgo (Texas) | 5,018.91 mi (8,077.15 km) |
| Merthyr Tudful to High Point (North Carolina) | 3,781.51 mi (6,085.75 km) |
| Merthyr Tudful to Highland (California) | 5,285.05 mi (8,505.46 km) |
| Merthyr Tudful to Highland (Illinois) | 4,040.83 mi (6,503.09 km) |
| Merthyr Tudful to Highland (Indiana) | 3,824.13 mi (6,154.34 km) |
| Merthyr Tudful to Highland (Utah) | 4,759.24 mi (7,659.25 km) |
| Merthyr Tudful to Highland City (Florida) | 4,248.88 mi (6,837.92 km) |
| Merthyr Tudful to Highland Park (Illinois) | 3,808.72 mi (6,129.54 km) |
| Merthyr Tudful to Highland Park (New Jersey) | 3,349.67 mi (5,390.77 km) |
| Merthyr Tudful to Highland Springs (Virginia) | 3,599.67 mi (5,793.12 km) |
| Merthyr Tudful to Highland Village (Texas) | 4,609.26 mi (7,417.88 km) |
| Merthyr Tudful to Highlands Ranch (Colorado) | 4,572.17 mi (7,358.19 km) |
| Merthyr Tudful to Hillcrest (California) | 5,272.53 mi (8,485.32 km) |
| Merthyr Tudful to Hillcrest Heights (Maryland) | 3,526.81 mi (5,675.86 km) |
