| Donostia to Senftenberg | 934.73 mi (1,504.31 km) |
| Donostia to Siegburg | 672.81 mi (1,082.79 km) |
| Donostia to Siegen | 701.71 mi (1,129.29 km) |
| Donostia to Sigmaringen | 631.80 mi (1,016.79 km) |
| Donostia to Simbach am Inn | 797.43 mi (1,283.34 km) |
| Donostia to Simmerath | 635.93 mi (1,023.42 km) |
| Donostia to Sindelfingen | 644.40 mi (1,037.07 km) |
| Donostia to Sinsheim | 659.91 mi (1,062.02 km) |
| Donostia to Sinzheim | 614.11 mi (988.32 km) |
| Donostia to Sinzig | 661.52 mi (1,064.61 km) |
| Donostia to Soest | 738.38 mi (1,188.30 km) |
| Donostia to Solingen | 687.89 mi (1,107.04 km) |
| Donostia to Soltau | 859.30 mi (1,382.91 km) |
| Donostia to Sommerda | 816.97 mi (1,314.79 km) |
| Donostia to Sondershausen | 816.91 mi (1,314.68 km) |
