| Swansea to Stony Brook (New York) | 908.98 mi (1,462.85 km) |
| Swansea to Storm Lake (Iowa) | 393.12 mi (632.67 km) |
| Swansea to Storrs (Connecticut) | 960.95 mi (1,546.51 km) |
| Swansea to Stoughton (Wisconsin) | 304.77 mi (490.48 km) |
| Swansea to Stow (Ohio) | 488.18 mi (785.66 km) |
| Swansea to Streamwood (Illinois) | 257.99 mi (415.20 km) |
| Swansea to Streator (Illinois) | 188.11 mi (302.73 km) |
| Swansea to Streetsboro (Ohio) | 493.97 mi (794.97 km) |
| Swansea to Strongsville (Ohio) | 472.05 mi (759.70 km) |
| Swansea to Stuart (Florida) | 965.64 mi (1,554.05 km) |
| Swansea to Stuarts Draft (Virginia) | 594.67 mi (957.03 km) |
| Swansea to Sturgis (Michigan) | 329.32 mi (530.00 km) |
| Swansea to Suamico (Wisconsin) | 431.89 mi (695.07 km) |
| Swansea to Sudley (Virginia) | 673.44 mi (1,083.80 km) |
| Swansea to Suffern (New York) | 857.79 mi (1,380.49 km) |
