| Llantwit Major to Iselin (New Jersey) | 3,344.65 mi (5,382.69 km) |
| Llantwit Major to Isla Vista (California) | 5,368.65 mi (8,640.01 km) |
| Llantwit Major to Issaquah (Washington) | 4,695.53 mi (7,556.73 km) |
| Llantwit Major to Ithaca (New York) | 3,355.15 mi (5,399.59 km) |
| Llantwit Major to Ives Estates (Florida) | 4,276.39 mi (6,882.19 km) |
| Llantwit Major to Jackson (Michigan) | 3,679.58 mi (5,921.71 km) |
| Llantwit Major to Jackson (Mississippi) | 4,380.22 mi (7,049.28 km) |
| Llantwit Major to Jackson (Missouri) | 4,111.04 mi (6,616.08 km) |
| Llantwit Major to Jackson (Tennessee) | 4,161.23 mi (6,696.85 km) |
| Llantwit Major to Jackson (Wyoming) | 4,575.84 mi (7,364.10 km) |
| Llantwit Major to Jacksonville (Alabama) | 4,124.89 mi (6,638.36 km) |
| Llantwit Major to Jacksonville (Arkansas) | 4,330.70 mi (6,969.59 km) |
| Llantwit Major to Jacksonville (Florida) | 4,123.55 mi (6,636.22 km) |
| Llantwit Major to Jacksonville (Illinois) | 4,022.41 mi (6,473.45 km) |
| Llantwit Major to Jacksonville (North Carolina) | 3,733.55 mi (6,008.56 km) |
