| Gourock to Sierpc | 1,001.27 mi (1,611.39 km) |
| Gourock to Skarzysko-Kamienna | 1,100.88 mi (1,771.70 km) |
| Gourock to Skawina | 1,098.19 mi (1,767.37 km) |
| Gourock to Skierniewice | 1,045.25 mi (1,682.17 km) |
| Gourock to Skoczow | 1,065.44 mi (1,714.66 km) |
| Gourock to Skwierzyna | 848.26 mi (1,365.14 km) |
| Gourock to Slawno | 852.03 mi (1,371.21 km) |
| Gourock to Slubice | 819.74 mi (1,319.25 km) |
| Gourock to Slupca | 947.67 mi (1,525.13 km) |
| Gourock to Slupsk | 863.69 mi (1,389.97 km) |
| Gourock to Sochaczew | 1,040.78 mi (1,674.98 km) |
| Gourock to Sokolka | 1,136.66 mi (1,829.27 km) |
| Gourock to Sokolow Podlaski | 1,114.06 mi (1,792.91 km) |
| Gourock to Solec Kujawski | 940.76 mi (1,514.00 km) |
| Gourock to Sopot | 923.39 mi (1,486.05 km) |
