| Santander to Senftenberg | 996.86 mi (1,604.29 km) |
| Santander to Siegburg | 723.06 mi (1,163.65 km) |
| Santander to Siegen | 754.09 mi (1,213.58 km) |
| Santander to Sigmaringen | 702.91 mi (1,131.23 km) |
| Santander to Simbach am Inn | 872.46 mi (1,404.08 km) |
| Santander to Simmerath | 684.11 mi (1,100.97 km) |
| Santander to Sindelfingen | 711.59 mi (1,145.19 km) |
| Santander to Sinsheim | 723.78 mi (1,164.81 km) |
| Santander to Sinzheim | 679.17 mi (1,093.01 km) |
| Santander to Sinzig | 713.37 mi (1,148.06 km) |
| Santander to Soest | 787.39 mi (1,267.18 km) |
| Santander to Solingen | 735.71 mi (1,184.02 km) |
| Santander to Soltau | 906.36 mi (1,458.64 km) |
| Santander to Sommerda | 875.66 mi (1,409.23 km) |
| Santander to Sondershausen | 874.07 mi (1,406.67 km) |
