| Llantwit Major to Indianola (Iowa) | 4,073.19 mi (6,555.16 km) |
| Llantwit Major to Indio (California) | 5,285.98 mi (8,506.96 km) |
| Llantwit Major to Inglewood (California) | 5,344.47 mi (8,601.10 km) |
| Llantwit Major to Inkster (Michigan) | 3,634.44 mi (5,849.07 km) |
| Llantwit Major to Inver Grove Heights (Minnesota) | 3,893.11 mi (6,265.36 km) |
| Llantwit Major to Inwood (New York) | 3,318.99 mi (5,341.39 km) |
| Llantwit Major to Iona (Florida) | 4,324.51 mi (6,959.63 km) |
| Llantwit Major to Ionia (Michigan) | 3,673.39 mi (5,911.75 km) |
| Llantwit Major to Iowa City (Iowa) | 3,982.23 mi (6,408.78 km) |
| Llantwit Major to Irmo (South Carolina) | 3,922.13 mi (6,312.06 km) |
| Llantwit Major to Irondale (Alabama) | 4,174.90 mi (6,718.86 km) |
| Llantwit Major to Ironton (Ohio) | 3,777.23 mi (6,078.86 km) |
| Llantwit Major to Irvine (California) | 5,341.14 mi (8,595.73 km) |
| Llantwit Major to Irving (Texas) | 4,623.30 mi (7,440.48 km) |
| Llantwit Major to Isabela (Puerto Rico) | 4,092.78 mi (6,586.70 km) |
