| Sleaford to Sierpc | 833.41 mi (1,341.24 km) |
| Sleaford to Skarzysko-Kamienna | 911.96 mi (1,467.66 km) |
| Sleaford to Skawina | 892.28 mi (1,435.99 km) |
| Sleaford to Skierniewice | 865.20 mi (1,392.40 km) |
| Sleaford to Skoczow | 853.77 mi (1,374.02 km) |
| Sleaford to Skwierzyna | 663.97 mi (1,068.56 km) |
| Sleaford to Slawno | 703.88 mi (1,132.78 km) |
| Sleaford to Slubice | 628.02 mi (1,010.70 km) |
| Sleaford to Slupca | 765.70 mi (1,232.28 km) |
| Sleaford to Slupsk | 718.23 mi (1,155.88 km) |
| Sleaford to Sochaczew | 864.74 mi (1,391.67 km) |
| Sleaford to Sokolka | 985.52 mi (1,586.05 km) |
| Sleaford to Sokolow Podlaski | 945.88 mi (1,522.24 km) |
| Sleaford to Solec Kujawski | 772.46 mi (1,243.16 km) |
| Sleaford to Sopot | 779.97 mi (1,255.24 km) |
