| Solothurn to Sierpc | 664.22 mi (1,068.96 km) |
| Solothurn to Skarzysko-Kamienna | 660.70 mi (1,063.29 km) |
| Solothurn to Skawina | 592.81 mi (954.03 km) |
| Solothurn to Skierniewice | 652.18 mi (1,049.58 km) |
| Solothurn to Skoczow | 544.61 mi (876.47 km) |
| Solothurn to Skwierzyna | 513.23 mi (825.97 km) |
| Solothurn to Slawno | 633.71 mi (1,019.86 km) |
| Solothurn to Slubice | 473.11 mi (761.40 km) |
| Solothurn to Slupca | 578.82 mi (931.52 km) |
| Solothurn to Slupsk | 648.86 mi (1,044.24 km) |
| Solothurn to Sochaczew | 663.39 mi (1,067.63 km) |
| Solothurn to Sokolka | 821.24 mi (1,321.67 km) |
| Solothurn to Sokolow Podlaski | 745.62 mi (1,199.96 km) |
| Solothurn to Solec Kujawski | 622.33 mi (1,001.54 km) |
| Solothurn to Sopot | 692.43 mi (1,114.36 km) |
