| Llantwit Major to Hilliard (Ohio) | 3,728.51 mi (6,000.45 km) |
| Llantwit Major to Hillsboro (Oregon) | 4,833.27 mi (7,778.40 km) |
| Llantwit Major to Hillsborough (California) | 5,268.90 mi (8,479.47 km) |
| Llantwit Major to Hillsborough (New Jersey) | 3,361.18 mi (5,409.29 km) |
| Llantwit Major to Hilo (Hawaii) | 7,232.51 mi (11,639.60 km) |
| Llantwit Major to Hilton Head Island (South Carolina) | 3,994.63 mi (6,428.74 km) |
| Llantwit Major to Hinesville (Georgia) | 4,048.49 mi (6,515.41 km) |
| Llantwit Major to Hinsdale (Illinois) | 3,837.03 mi (6,175.10 km) |
| Llantwit Major to Hobart (Indiana) | 3,824.60 mi (6,155.10 km) |
| Llantwit Major to Hobbs (New Mexico) | 4,869.07 mi (7,836.00 km) |
| Llantwit Major to Hobe Sound (Florida) | 4,219.23 mi (6,790.20 km) |
| Llantwit Major to Hoboken (New Jersey) | 3,325.24 mi (5,351.46 km) |
| Llantwit Major to Hockessin (Delaware) | 3,434.82 mi (5,527.81 km) |
| Llantwit Major to Hoffman Estates (Illinois) | 3,833.57 mi (6,169.53 km) |
| Llantwit Major to Holbrook (New York) | 3,283.49 mi (5,284.27 km) |
