| Swansea to Senftenberg | 4,717.63 mi (7,592.30 km) |
| Swansea to Siegburg | 4,497.71 mi (7,238.37 km) |
| Swansea to Siegen | 4,525.00 mi (7,282.29 km) |
| Swansea to Sigmaringen | 4,674.35 mi (7,522.64 km) |
| Swansea to Simbach am Inn | 4,811.56 mi (7,743.46 km) |
| Swansea to Simmerath | 4,470.91 mi (7,195.24 km) |
| Swansea to Sindelfingen | 4,642.42 mi (7,471.26 km) |
| Swansea to Sinsheim | 4,617.71 mi (7,431.49 km) |
| Swansea to Sinzheim | 4,608.59 mi (7,416.81 km) |
| Swansea to Sinzig | 4,508.67 mi (7,256.00 km) |
| Swansea to Soest | 4,503.54 mi (7,247.75 km) |
| Swansea to Solingen | 4,480.17 mi (7,210.14 km) |
| Swansea to Soltau | 4,514.22 mi (7,264.93 km) |
| Swansea to Sommerda | 4,628.17 mi (7,448.32 km) |
| Swansea to Sondershausen | 4,611.34 mi (7,421.24 km) |
