| Llantrisant to Hutchinson (Minnesota) | 3,937.10 mi (6,336.14 km) |
| Llantrisant to Hutto (Texas) | 4,764.93 mi (7,668.41 km) |
| Llantrisant to Hyattsville (Maryland) | 3,524.92 mi (5,672.81 km) |
| Llantrisant to Hybla Valley (Virginia) | 3,539.62 mi (5,696.47 km) |
| Llantrisant to Idaho Falls (Idaho) | 4,612.96 mi (7,423.85 km) |
| Llantrisant to Idylwood (Virginia) | 3,538.44 mi (5,694.57 km) |
| Llantrisant to Ilchester (Maryland) | 3,505.86 mi (5,642.13 km) |
| Llantrisant to Immokalee (Florida) | 4,309.13 mi (6,934.87 km) |
| Llantrisant to Imperial (California) | 5,310.95 mi (8,547.15 km) |
| Llantrisant to Imperial Beach (California) | 5,378.78 mi (8,656.32 km) |
| Llantrisant to Independence (Kentucky) | 3,834.29 mi (6,170.69 km) |
| Llantrisant to Independence (Missouri) | 4,211.53 mi (6,777.81 km) |
| Llantrisant to Indian Trail (North Carolina) | 3,855.35 mi (6,204.58 km) |
| Llantrisant to Indiana (Pennsylvania) | 3,541.73 mi (5,699.86 km) |
| Llantrisant to Indianapolis (Indiana) | 3,859.84 mi (6,211.82 km) |
