| Santander to Sierpc | 1,253.68 mi (2,017.60 km) |
| Santander to Skarzysko-Kamienna | 1,265.58 mi (2,036.75 km) |
| Santander to Skawina | 1,200.48 mi (1,931.99 km) |
| Santander to Skierniewice | 1,250.96 mi (2,013.22 km) |
| Santander to Skoczow | 1,152.31 mi (1,854.46 km) |
| Santander to Skwierzyna | 1,087.23 mi (1,749.73 km) |
| Santander to Slawno | 1,188.91 mi (1,913.36 km) |
| Santander to Slubice | 1,044.45 mi (1,680.89 km) |
| Santander to Slupca | 1,168.48 mi (1,880.48 km) |
| Santander to Slupsk | 1,204.94 mi (1,939.17 km) |
| Santander to Sochaczew | 1,260.25 mi (2,028.18 km) |
| Santander to Sokolka | 1,415.20 mi (2,277.55 km) |
| Santander to Sokolow Podlaski | 1,344.81 mi (2,164.26 km) |
| Santander to Solec Kujawski | 1,204.32 mi (1,938.17 km) |
| Santander to Sopot | 1,258.32 mi (2,025.07 km) |
