| Romanshorn to Sierpc | 584.56 mi (940.75 km) |
| Romanshorn to Skarzysko-Kamienna | 574.59 mi (924.71 km) |
| Romanshorn to Skawina | 505.00 mi (812.71 km) |
| Romanshorn to Skierniewice | 568.86 mi (915.50 km) |
| Romanshorn to Skoczow | 456.80 mi (735.15 km) |
| Romanshorn to Skwierzyna | 441.58 mi (710.66 km) |
| Romanshorn to Slawno | 566.66 mi (911.95 km) |
| Romanshorn to Slubice | 403.52 mi (649.41 km) |
| Romanshorn to Slupca | 499.78 mi (804.32 km) |
| Romanshorn to Slupsk | 581.22 mi (935.39 km) |
| Romanshorn to Sochaczew | 580.82 mi (934.74 km) |
| Romanshorn to Sokolka | 739.14 mi (1,189.52 km) |
| Romanshorn to Sokolow Podlaski | 661.81 mi (1,065.08 km) |
| Romanshorn to Solec Kujawski | 545.87 mi (878.49 km) |
| Romanshorn to Sopot | 620.85 mi (999.15 km) |
