| Rhondda to Willow Grove (Pennsylvania) | 3,394.11 mi (5,462.29 km) |
| Rhondda to Willowbrook (California) | 5,335.57 mi (8,586.77 km) |
| Rhondda to Willowick (Ohio) | 3,586.78 mi (5,772.37 km) |
| Rhondda to Wilmette (Illinois) | 3,812.66 mi (6,135.88 km) |
| Rhondda to Wilmington (Delaware) | 3,429.19 mi (5,518.75 km) |
| Rhondda to Wilmington (North Carolina) | 3,777.73 mi (6,079.66 km) |
| Rhondda to Wilmington (Ohio) | 3,779.05 mi (6,081.79 km) |
| Rhondda to Wilmington Island (Georgia) | 4,012.29 mi (6,457.15 km) |
| Rhondda to Wilson (North Carolina) | 3,708.54 mi (5,968.33 km) |
| Rhondda to Wilsonville (Oregon) | 4,831.45 mi (7,775.47 km) |
| Rhondda to Wilton Manors (Florida) | 4,265.31 mi (6,864.35 km) |
| Rhondda to Wimauma (Florida) | 4,280.03 mi (6,888.04 km) |
| Rhondda to Winchester (Kentucky) | 3,860.26 mi (6,212.49 km) |
| Rhondda to Winchester (Nevada) | 5,108.62 mi (8,221.53 km) |
| Rhondda to Winchester (Virginia) | 3,562.41 mi (5,733.15 km) |
