| West Des Moines to Sierpc | 4,806.10 mi (7,734.68 km) |
| West Des Moines to Skarzysko-Kamienna | 4,928.70 mi (7,931.98 km) |
| West Des Moines to Skawina | 4,948.79 mi (7,964.31 km) |
| West Des Moines to Skierniewice | 4,864.28 mi (7,828.30 km) |
| West Des Moines to Skoczow | 4,923.69 mi (7,923.92 km) |
| West Des Moines to Skwierzyna | 4,688.75 mi (7,545.82 km) |
| West Des Moines to Slawno | 4,646.79 mi (7,478.29 km) |
| West Des Moines to Slubice | 4,669.80 mi (7,515.32 km) |
| West Des Moines to Slupca | 4,777.47 mi (7,688.60 km) |
| West Des Moines to Slupsk | 4,652.77 mi (7,487.91 km) |
| West Des Moines to Sochaczew | 4,854.18 mi (7,812.05 km) |
| West Des Moines to Sokolka | 4,895.44 mi (7,878.44 km) |
| West Des Moines to Sokolow Podlaski | 4,907.40 mi (7,897.69 km) |
| West Des Moines to Solec Kujawski | 4,752.75 mi (7,648.82 km) |
| West Des Moines to Sopot | 4,699.94 mi (7,563.82 km) |
