| Llantwit Major to Willow Grove (Pennsylvania) | 3,395.82 mi (5,465.04 km) |
| Llantwit Major to Willowbrook (California) | 5,342.86 mi (8,598.51 km) |
| Llantwit Major to Willowick (Ohio) | 3,589.86 mi (5,777.32 km) |
| Llantwit Major to Wilmette (Illinois) | 3,816.77 mi (6,142.50 km) |
| Llantwit Major to Wilmington (Delaware) | 3,430.87 mi (5,521.45 km) |
| Llantwit Major to Wilmington (North Carolina) | 3,778.44 mi (6,080.81 km) |
| Llantwit Major to Wilmington (Ohio) | 3,781.97 mi (6,086.48 km) |
| Llantwit Major to Wilmington Island (Georgia) | 4,013.06 mi (6,458.39 km) |
| Llantwit Major to Wilson (North Carolina) | 3,709.62 mi (5,970.06 km) |
| Llantwit Major to Wilsonville (Oregon) | 4,840.82 mi (7,790.55 km) |
| Llantwit Major to Wilton Manors (Florida) | 4,264.71 mi (6,863.39 km) |
| Llantwit Major to Wimauma (Florida) | 4,280.15 mi (6,888.23 km) |
| Llantwit Major to Winchester (Kentucky) | 3,862.91 mi (6,216.75 km) |
| Llantwit Major to Winchester (Nevada) | 5,115.74 mi (8,232.99 km) |
| Llantwit Major to Winchester (Virginia) | 3,564.37 mi (5,736.29 km) |
