| Rhondda to South Plainfield (New Jersey) | 3,346.77 mi (5,386.11 km) |
| Rhondda to South Portland (Maine) | 3,051.11 mi (4,910.29 km) |
| Rhondda to South Riding (Virginia) | 3,546.91 mi (5,708.19 km) |
| Rhondda to South River (New Jersey) | 3,350.80 mi (5,392.59 km) |
| Rhondda to South Salt Lake (Utah) | 4,752.00 mi (7,647.60 km) |
| Rhondda to South San Francisco (California) | 5,256.87 mi (8,460.11 km) |
| Rhondda to South San Jose Hills (California) | 5,319.43 mi (8,560.79 km) |
| Rhondda to South Sioux City (Nebraska) | 4,121.50 mi (6,632.92 km) |
| Rhondda to South St. Paul (Minnesota) | 3,884.07 mi (6,250.81 km) |
| Rhondda to South Valley (New Mexico) | 4,874.38 mi (7,844.56 km) |
| Rhondda to South Venice (Florida) | 4,317.43 mi (6,948.22 km) |
| Rhondda to South Whittier (California) | 5,328.07 mi (8,574.71 km) |
| Rhondda to South Yarmouth (Massachusetts) | 3,126.63 mi (5,031.83 km) |
| Rhondda to Southaven (Mississippi) | 4,238.28 mi (6,820.85 km) |
| Rhondda to Southchase (Florida) | 4,207.43 mi (6,771.20 km) |
