| Ionia to Sierpc | 4,453.17 mi (7,166.68 km) |
| Ionia to Skarzysko-Kamienna | 4,571.36 mi (7,356.89 km) |
| Ionia to Skawina | 4,584.65 mi (7,378.28 km) |
| Ionia to Skierniewice | 4,508.64 mi (7,255.95 km) |
| Ionia to Skoczow | 4,556.59 mi (7,333.12 km) |
| Ionia to Skwierzyna | 4,326.02 mi (6,962.06 km) |
| Ionia to Slawno | 4,293.93 mi (6,910.41 km) |
| Ionia to Slubice | 4,304.19 mi (6,926.92 km) |
| Ionia to Slupca | 4,418.32 mi (7,110.60 km) |
| Ionia to Slupsk | 4,301.09 mi (6,921.94 km) |
| Ionia to Sochaczew | 4,499.80 mi (7,241.74 km) |
| Ionia to Sokolka | 4,553.16 mi (7,327.61 km) |
| Ionia to Sokolow Podlaski | 4,558.17 mi (7,335.67 km) |
| Ionia to Solec Kujawski | 4,397.62 mi (7,077.28 km) |
| Ionia to Sopot | 4,351.34 mi (7,002.81 km) |
