| Castricum to Skarzysko-Kamienna | 699.31 mi (1,125.44 km) |
| Castricum to Skawina | 677.81 mi (1,090.83 km) |
| Castricum to Skierniewice | 654.80 mi (1,053.80 km) |
| Castricum to Skoczow | 639.31 mi (1,028.87 km) |
| Castricum to Skwierzyna | 454.47 mi (731.40 km) |
| Castricum to Slawno | 508.91 mi (819.02 km) |
| Castricum to Slubice | 416.78 mi (670.75 km) |
| Castricum to Slupca | 555.65 mi (894.23 km) |
| Castricum to Slupsk | 524.18 mi (843.59 km) |
| Castricum to Sochaczew | 655.46 mi (1,054.85 km) |
| Castricum to Sokolka | 783.47 mi (1,260.88 km) |
| Castricum to Sokolow Podlaski | 738.24 mi (1,188.08 km) |
| Castricum to Solec Kujawski | 566.86 mi (912.27 km) |
| Castricum to Sopot | 585.11 mi (941.64 km) |
| Castricum to Sosnowiec | 641.53 mi (1,032.45 km) |
