| Llantwit Major to West St. Paul (Minnesota) | 3,890.55 mi (6,261.23 km) |
| Llantwit Major to West University Place (Texas) | 4,722.56 mi (7,600.22 km) |
| Llantwit Major to West Valley City (Utah) | 4,764.01 mi (7,666.93 km) |
| Llantwit Major to West Whittier-Los Nietos (California) | 5,334.22 mi (8,584.59 km) |
| Llantwit Major to Westbrook (Maine) | 3,053.17 mi (4,913.60 km) |
| Llantwit Major to Westbury (New York) | 3,306.46 mi (5,321.23 km) |
| Llantwit Major to Westchase (Florida) | 4,275.11 mi (6,880.13 km) |
| Llantwit Major to Westchester (Florida) | 4,294.47 mi (6,911.29 km) |
| Llantwit Major to Westchester (Illinois) | 3,833.40 mi (6,169.27 km) |
| Llantwit Major to Western Springs (Illinois) | 3,835.92 mi (6,173.32 km) |
| Llantwit Major to Westerville (Ohio) | 3,715.01 mi (5,978.73 km) |
| Llantwit Major to Westfield (Indiana) | 3,848.04 mi (6,192.82 km) |
| Llantwit Major to Westfield (Massachusetts) | 3,214.61 mi (5,173.41 km) |
| Llantwit Major to Westfield (New Jersey) | 3,342.24 mi (5,378.82 km) |
| Llantwit Major to Westlake (Ohio) | 3,616.29 mi (5,819.85 km) |
