| Rhondda to St. George (Utah) | 5,004.51 mi (8,053.98 km) |
| Rhondda to St. Helens (Oregon) | 4,801.91 mi (7,727.93 km) |
| Rhondda to St. James (New York) | 3,281.86 mi (5,281.65 km) |
| Rhondda to St. John (Indiana) | 3,831.58 mi (6,166.33 km) |
| Rhondda to St. Joseph (Missouri) | 4,192.77 mi (6,747.61 km) |
| Rhondda to St. Louis (Missouri) | 4,070.84 mi (6,551.39 km) |
| Rhondda to St. Louis Park (Minnesota) | 3,893.09 mi (6,265.32 km) |
| Rhondda to St. Marys (Georgia) | 4,097.91 mi (6,594.96 km) |
| Rhondda to St. Marys (Pennsylvania) | 3,476.79 mi (5,595.36 km) |
| Rhondda to St. Matthews (Kentucky) | 3,906.86 mi (6,287.49 km) |
| Rhondda to St. Michael (Minnesota) | 3,893.37 mi (6,265.78 km) |
| Rhondda to St. Paul (Minnesota) | 3,883.61 mi (6,250.06 km) |
| Rhondda to St. Peter (Minnesota) | 3,943.68 mi (6,346.74 km) |
| Rhondda to St. Peters (Missouri) | 4,077.94 mi (6,562.81 km) |
| Rhondda to St. Petersburg (Florida) | 4,290.47 mi (6,904.84 km) |
