| Llantwit Major to Worthington (Ohio) | 3,720.33 mi (5,987.29 km) |
| Llantwit Major to Wright (Florida) | 4,326.05 mi (6,962.11 km) |
| Llantwit Major to Wyandanch (New York) | 3,297.54 mi (5,306.88 km) |
| Llantwit Major to Wyandotte (Michigan) | 3,631.76 mi (5,844.75 km) |
| Llantwit Major to Wylie (Texas) | 4,596.41 mi (7,397.21 km) |
| Llantwit Major to Wyndham (Virginia) | 3,607.20 mi (5,805.23 km) |
| Llantwit Major to Wyoming (Michigan) | 3,701.89 mi (5,957.61 km) |
| Llantwit Major to Wyomissing (Pennsylvania) | 3,423.06 mi (5,508.88 km) |
| Llantwit Major to Xenia (Ohio) | 3,775.87 mi (6,076.67 km) |
| Llantwit Major to Yakima (Washington) | 4,706.46 mi (7,574.32 km) |
| Llantwit Major to Yankton (South Dakota) | 4,142.31 mi (6,666.41 km) |
| Llantwit Major to Yauco (Puerto Rico) | 4,110.39 mi (6,615.03 km) |
| Llantwit Major to Yazoo City (Mississippi) | 4,361.09 mi (7,018.50 km) |
| Llantwit Major to Yeadon (Pennsylvania) | 3,410.65 mi (5,488.92 km) |
| Llantwit Major to Yelm (Washington) | 4,745.27 mi (7,636.77 km) |
