| Rhondda to St. Simons (Georgia) | 4,069.56 mi (6,549.32 km) |
| Rhondda to Stafford (Texas) | 4,729.59 mi (7,611.54 km) |
| Rhondda to Stallings (North Carolina) | 3,851.03 mi (6,197.63 km) |
| Rhondda to Stamford (Connecticut) | 3,288.98 mi (5,293.10 km) |
| Rhondda to Stanford (California) | 5,262.21 mi (8,468.71 km) |
| Rhondda to Stanton (California) | 5,334.33 mi (8,584.78 km) |
| Rhondda to Star (Idaho) | 4,736.49 mi (7,622.64 km) |
| Rhondda to Starkville (Mississippi) | 4,265.11 mi (6,864.03 km) |
| Rhondda to State College (Pennsylvania) | 3,478.26 mi (5,597.72 km) |
| Rhondda to Staten Island (New York) | 3,335.46 mi (5,367.91 km) |
| Rhondda to Statesboro (Georgia) | 4,024.73 mi (6,477.18 km) |
| Rhondda to Statesville (North Carolina) | 3,828.11 mi (6,160.74 km) |
| Rhondda to Staunton (Virginia) | 3,644.29 mi (5,864.92 km) |
| Rhondda to Steamboat Springs (Colorado) | 4,592.17 mi (7,390.39 km) |
| Rhondda to Steiner Ranch (Texas) | 4,784.16 mi (7,699.37 km) |
