| Penarth to Worthington (Ohio) | 3,731.97 mi (6,006.02 km) |
| Penarth to Wright (Florida) | 4,338.28 mi (6,981.78 km) |
| Penarth to Wyandanch (New York) | 3,309.71 mi (5,326.47 km) |
| Penarth to Wyandotte (Michigan) | 3,643.16 mi (5,863.10 km) |
| Penarth to Wylie (Texas) | 4,607.72 mi (7,415.41 km) |
| Penarth to Wyndham (Virginia) | 3,619.41 mi (5,824.88 km) |
| Penarth to Wyoming (Michigan) | 3,713.02 mi (5,975.53 km) |
| Penarth to Wyomissing (Pennsylvania) | 3,435.12 mi (5,528.29 km) |
| Penarth to Xenia (Ohio) | 3,787.49 mi (6,095.37 km) |
| Penarth to Yakima (Washington) | 4,713.88 mi (7,586.25 km) |
| Penarth to Yankton (South Dakota) | 4,152.52 mi (6,682.83 km) |
| Penarth to Yauco (Puerto Rico) | 4,123.62 mi (6,636.33 km) |
| Penarth to Yazoo City (Mississippi) | 4,372.88 mi (7,037.47 km) |
| Penarth to Yeadon (Pennsylvania) | 3,422.80 mi (5,508.46 km) |
| Penarth to Yelm (Washington) | 4,752.40 mi (7,648.24 km) |
