| Donostia to Sierpc | 1,190.24 mi (1,915.51 km) |
| Donostia to Skarzysko-Kamienna | 1,195.17 mi (1,923.45 km) |
| Donostia to Skawina | 1,127.01 mi (1,813.74 km) |
| Donostia to Skierniewice | 1,183.92 mi (1,905.34 km) |
| Donostia to Skoczow | 1,078.81 mi (1,736.18 km) |
| Donostia to Skwierzyna | 1,027.48 mi (1,653.57 km) |
| Donostia to Slawno | 1,134.36 mi (1,825.58 km) |
| Donostia to Slubice | 985.03 mi (1,585.26 km) |
| Donostia to Slupca | 1,104.69 mi (1,777.83 km) |
| Donostia to Slupsk | 1,150.31 mi (1,851.24 km) |
| Donostia to Sochaczew | 1,194.07 mi (1,921.66 km) |
| Donostia to Sokolka | 1,350.49 mi (2,173.41 km) |
| Donostia to Sokolow Podlaski | 1,277.73 mi (2,056.30 km) |
| Donostia to Solec Kujawski | 1,143.05 mi (1,839.56 km) |
| Donostia to Sopot | 1,201.65 mi (1,933.87 km) |
