| Llantrisant to Worthington (Ohio) | 3,720.93 mi (5,988.26 km) |
| Llantrisant to Wright (Florida) | 4,327.71 mi (6,964.77 km) |
| Llantrisant to Wyandanch (New York) | 3,299.10 mi (5,309.39 km) |
| Llantrisant to Wyandotte (Michigan) | 3,631.99 mi (5,845.12 km) |
| Llantrisant to Wylie (Texas) | 4,596.50 mi (7,397.36 km) |
| Llantrisant to Wyndham (Virginia) | 3,608.83 mi (5,807.85 km) |
| Llantrisant to Wyoming (Michigan) | 3,701.72 mi (5,957.35 km) |
| Llantrisant to Wyomissing (Pennsylvania) | 3,424.41 mi (5,511.05 km) |
| Llantrisant to Xenia (Ohio) | 3,776.44 mi (6,077.59 km) |
| Llantrisant to Yakima (Washington) | 4,702.25 mi (7,567.53 km) |
| Llantrisant to Yankton (South Dakota) | 4,140.92 mi (6,664.17 km) |
| Llantrisant to Yauco (Puerto Rico) | 4,116.16 mi (6,624.31 km) |
| Llantrisant to Yazoo City (Mississippi) | 4,361.95 mi (7,019.87 km) |
| Llantrisant to Yeadon (Pennsylvania) | 3,412.15 mi (5,491.33 km) |
| Llantrisant to Yelm (Washington) | 4,740.81 mi (7,629.60 km) |
