| Llantwit Major to Hormigueros (Puerto Rico) | 4,115.63 mi (6,623.46 km) |
| Llantwit Major to Horn Lake (Mississippi) | 4,244.10 mi (6,830.22 km) |
| Llantwit Major to Hot Springs (Arkansas) | 4,386.58 mi (7,059.53 km) |
| Llantwit Major to Hot Springs Village (Arkansas) | 4,374.89 mi (7,040.71 km) |
| Llantwit Major to Houma (Louisiana) | 4,537.19 mi (7,301.90 km) |
| Llantwit Major to Houston (Texas) | 4,717.20 mi (7,591.60 km) |
| Llantwit Major to Howard (Wisconsin) | 3,719.26 mi (5,985.58 km) |
| Llantwit Major to Huber Heights (Ohio) | 3,774.74 mi (6,074.86 km) |
| Llantwit Major to Hudson (Florida) | 4,263.54 mi (6,861.51 km) |
| Llantwit Major to Hudson (Ohio) | 3,606.05 mi (5,803.37 km) |
| Llantwit Major to Hudson (Wisconsin) | 3,874.69 mi (6,235.71 km) |
| Llantwit Major to Hueytown (Alabama) | 4,195.55 mi (6,752.08 km) |
| Llantwit Major to Hugo (Minnesota) | 3,873.78 mi (6,234.25 km) |
| Llantwit Major to Humacao (Puerto Rico) | 4,059.97 mi (6,533.88 km) |
| Llantwit Major to Humble (Texas) | 4,701.70 mi (7,566.66 km) |
