| Rhondda to Wichita (Kansas) | 4,390.10 mi (7,065.19 km) |
| Rhondda to Wichita Falls (Texas) | 4,626.53 mi (7,445.67 km) |
| Rhondda to Wickliffe (Ohio) | 3,588.02 mi (5,774.36 km) |
| Rhondda to Wildomar (California) | 5,320.07 mi (8,561.82 km) |
| Rhondda to Wildwood (Florida) | 4,213.82 mi (6,781.49 km) |
| Rhondda to Wildwood (Missouri) | 4,090.09 mi (6,582.37 km) |
| Rhondda to Wilkes-Barre (Pennsylvania) | 3,377.92 mi (5,436.23 km) |
| Rhondda to Wilkinsburg (Pennsylvania) | 3,575.20 mi (5,753.73 km) |
| Rhondda to Williamsburg (Virginia) | 3,587.35 mi (5,773.28 km) |
| Rhondda to Williamsport (Pennsylvania) | 3,425.51 mi (5,512.83 km) |
| Rhondda to Williamstown (New Jersey) | 3,408.33 mi (5,485.17 km) |
| Rhondda to Willimantic (Connecticut) | 3,207.78 mi (5,162.43 km) |
| Rhondda to Williston (North Dakota) | 4,096.36 mi (6,592.46 km) |
| Rhondda to Willmar (Minnesota) | 3,946.44 mi (6,351.18 km) |
| Rhondda to Willoughby (Ohio) | 3,583.90 mi (5,767.73 km) |
