| Llantwit Major to Wichita (Kansas) | 4,394.76 mi (7,072.69 km) |
| Llantwit Major to Wichita Falls (Texas) | 4,630.68 mi (7,452.35 km) |
| Llantwit Major to Wickliffe (Ohio) | 3,591.09 mi (5,779.30 km) |
| Llantwit Major to Wildomar (California) | 5,327.17 mi (8,573.25 km) |
| Llantwit Major to Wildwood (Florida) | 4,214.10 mi (6,781.94 km) |
| Llantwit Major to Wildwood (Missouri) | 4,093.89 mi (6,588.48 km) |
| Llantwit Major to Wilkes-Barre (Pennsylvania) | 3,380.04 mi (5,439.64 km) |
| Llantwit Major to Wilkinsburg (Pennsylvania) | 3,577.74 mi (5,757.82 km) |
| Llantwit Major to Williamsburg (Virginia) | 3,588.59 mi (5,775.28 km) |
| Llantwit Major to Williamsport (Pennsylvania) | 3,427.81 mi (5,516.54 km) |
| Llantwit Major to Williamstown (New Jersey) | 3,409.89 mi (5,487.69 km) |
| Llantwit Major to Willimantic (Connecticut) | 3,209.46 mi (5,165.13 km) |
| Llantwit Major to Williston (North Dakota) | 4,103.84 mi (6,604.49 km) |
| Llantwit Major to Willmar (Minnesota) | 3,952.24 mi (6,360.51 km) |
| Llantwit Major to Willoughby (Ohio) | 3,586.97 mi (5,772.68 km) |
