| Council Bluffs to Sierpc | 4,886.46 mi (7,864.00 km) |
| Council Bluffs to Skarzysko-Kamienna | 5,010.06 mi (8,062.91 km) |
| Council Bluffs to Skawina | 5,031.86 mi (8,098.00 km) |
| Council Bluffs to Skierniewice | 4,945.26 mi (7,958.63 km) |
| Council Bluffs to Skoczow | 5,007.54 mi (8,058.86 km) |
| Council Bluffs to Skwierzyna | 4,771.70 mi (7,679.31 km) |
| Council Bluffs to Slawno | 4,727.29 mi (7,607.84 km) |
| Council Bluffs to Slubice | 4,753.50 mi (7,650.01 km) |
| Council Bluffs to Slupca | 4,859.43 mi (7,820.50 km) |
| Council Bluffs to Slupsk | 4,732.96 mi (7,616.97 km) |
| Council Bluffs to Sochaczew | 4,934.86 mi (7,941.89 km) |
| Council Bluffs to Sokolka | 4,973.01 mi (8,003.29 km) |
| Council Bluffs to Sokolow Podlaski | 4,986.71 mi (8,025.34 km) |
| Council Bluffs to Solec Kujawski | 4,833.72 mi (7,779.12 km) |
| Council Bluffs to Sopot | 4,779.31 mi (7,691.56 km) |
