| Castleford to Sierpc | 866.79 mi (1,394.97 km) |
| Castleford to Skarzysko-Kamienna | 951.49 mi (1,531.27 km) |
| Castleford to Skawina | 936.45 mi (1,507.07 km) |
| Castleford to Skierniewice | 902.09 mi (1,451.77 km) |
| Castleford to Skoczow | 899.44 mi (1,447.51 km) |
| Castleford to Skwierzyna | 700.90 mi (1,127.98 km) |
| Castleford to Slawno | 730.96 mi (1,176.37 km) |
| Castleford to Slubice | 666.83 mi (1,073.17 km) |
| Castleford to Slupca | 802.62 mi (1,291.69 km) |
| Castleford to Slupsk | 744.69 mi (1,198.47 km) |
| Castleford to Sochaczew | 900.53 mi (1,449.26 km) |
| Castleford to Sokolka | 1,015.16 mi (1,633.75 km) |
| Castleford to Sokolow Podlaski | 979.89 mi (1,576.99 km) |
| Castleford to Solec Kujawski | 805.61 mi (1,296.50 km) |
| Castleford to Sopot | 806.37 mi (1,297.73 km) |
