| Swansea to Sunset (Florida) | 1,049.85 mi (1,689.57 km) |
| Swansea to Superior (Colorado) | 816.53 mi (1,314.07 km) |
| Swansea to Superior (Wisconsin) | 572.60 mi (921.51 km) |
| Swansea to Surprise (Arizona) | 1,294.61 mi (2,083.47 km) |
| Swansea to Susanville (California) | 1,630.13 mi (2,623.44 km) |
| Swansea to Sussex (Wisconsin) | 329.83 mi (530.81 km) |
| Swansea to Suwanee (Georgia) | 452.83 mi (728.75 km) |
| Swansea to Sweetwater (Florida) | 1,044.80 mi (1,681.44 km) |
| Swansea to Sweetwater (Texas) | 720.49 mi (1,159.52 km) |
| Swansea to Sycamore (Illinois) | 247.74 mi (398.70 km) |
| Swansea to Sylacauga (Alabama) | 425.71 mi (685.11 km) |
| Swansea to Sylvania (Ohio) | 396.81 mi (638.61 km) |
| Swansea to Syosset (New York) | 888.97 mi (1,430.66 km) |
| Swansea to Syracuse (New York) | 786.45 mi (1,265.67 km) |
| Swansea to Syracuse (Utah) | 1,181.74 mi (1,901.82 km) |
