| Llantrisant to Hilliard (Ohio) | 3,729.11 mi (6,001.42 km) |
| Llantrisant to Hillsboro (Oregon) | 4,828.93 mi (7,771.41 km) |
| Llantrisant to Hillsborough (California) | 5,265.41 mi (8,473.85 km) |
| Llantrisant to Hillsborough (New Jersey) | 3,362.64 mi (5,411.65 km) |
| Llantrisant to Hilo (Hawaii) | 7,226.18 mi (11,629.41 km) |
| Llantrisant to Hilton Head Island (South Carolina) | 3,996.76 mi (6,432.16 km) |
| Llantrisant to Hinesville (Georgia) | 4,050.57 mi (6,518.76 km) |
| Llantrisant to Hinsdale (Illinois) | 3,836.82 mi (6,174.76 km) |
| Llantrisant to Hobart (Indiana) | 3,824.51 mi (6,154.95 km) |
| Llantrisant to Hobbs (New Mexico) | 4,868.39 mi (7,834.92 km) |
| Llantrisant to Hobe Sound (Florida) | 4,222.17 mi (6,794.93 km) |
| Llantrisant to Hoboken (New Jersey) | 3,326.73 mi (5,353.86 km) |
| Llantrisant to Hockessin (Delaware) | 3,436.30 mi (5,530.20 km) |
| Llantrisant to Hoffman Estates (Illinois) | 3,833.29 mi (6,169.08 km) |
| Llantrisant to Holbrook (New York) | 3,285.08 mi (5,286.82 km) |
