| Sint-Pieters-Leeuw to Skarzysko-Kamienna | 724.29 mi (1,165.64 km) |
| Sint-Pieters-Leeuw to Skawina | 687.49 mi (1,106.41 km) |
| Sint-Pieters-Leeuw to Skierniewice | 689.21 mi (1,109.18 km) |
| Sint-Pieters-Leeuw to Skoczow | 644.27 mi (1,036.86 km) |
| Sint-Pieters-Leeuw to Skwierzyna | 497.35 mi (800.41 km) |
| Sint-Pieters-Leeuw to Slawno | 576.23 mi (927.36 km) |
| Sint-Pieters-Leeuw to Slubice | 455.69 mi (733.35 km) |
| Sint-Pieters-Leeuw to Slupca | 593.52 mi (955.18 km) |
| Sint-Pieters-Leeuw to Slupsk | 592.17 mi (953.00 km) |
| Sint-Pieters-Leeuw to Sochaczew | 693.15 mi (1,115.51 km) |
| Sint-Pieters-Leeuw to Sokolka | 834.19 mi (1,342.49 km) |
| Sint-Pieters-Leeuw to Sokolow Podlaski | 778.60 mi (1,253.04 km) |
| Sint-Pieters-Leeuw to Solec Kujawski | 615.43 mi (990.43 km) |
| Sint-Pieters-Leeuw to Sopot | 650.34 mi (1,046.62 km) |
| Sint-Pieters-Leeuw to Sosnowiec | 653.45 mi (1,051.62 km) |
