| Llanelli to Worthington (Ohio) | 3,685.85 mi (5,931.80 km) |
| Llanelli to Wright (Florida) | 4,292.51 mi (6,908.13 km) |
| Llanelli to Wyandanch (New York) | 3,263.90 mi (5,252.74 km) |
| Llanelli to Wyandotte (Michigan) | 3,597.04 mi (5,788.87 km) |
| Llanelli to Wylie (Texas) | 4,561.61 mi (7,341.21 km) |
| Llanelli to Wyndham (Virginia) | 3,573.63 mi (5,751.20 km) |
| Llanelli to Wyoming (Michigan) | 3,666.96 mi (5,901.40 km) |
| Llanelli to Wyomissing (Pennsylvania) | 3,389.20 mi (5,454.40 km) |
| Llanelli to Xenia (Ohio) | 3,741.37 mi (6,021.15 km) |
| Llanelli to Yakima (Washington) | 4,672.50 mi (7,519.66 km) |
| Llanelli to Yankton (South Dakota) | 4,107.07 mi (6,609.69 km) |
| Llanelli to Yauco (Puerto Rico) | 4,084.49 mi (6,573.35 km) |
| Llanelli to Yazoo City (Mississippi) | 4,326.80 mi (6,963.32 km) |
| Llanelli to Yeadon (Pennsylvania) | 3,376.95 mi (5,434.68 km) |
| Llanelli to Yelm (Washington) | 4,711.55 mi (7,582.51 km) |
