| Keystone to Sierpc | 5,165.22 mi (8,312.63 km) |
| Keystone to Skarzysko-Kamienna | 5,268.57 mi (8,478.95 km) |
| Keystone to Skawina | 5,262.97 mi (8,469.94 km) |
| Keystone to Skierniewice | 5,212.13 mi (8,388.11 km) |
| Keystone to Skoczow | 5,227.36 mi (8,412.62 km) |
| Keystone to Skwierzyna | 5,015.97 mi (8,072.42 km) |
| Keystone to Slawno | 5,010.75 mi (8,064.02 km) |
| Keystone to Slubice | 4,986.84 mi (8,025.54 km) |
| Keystone to Slupca | 5,115.17 mi (8,232.07 km) |
| Keystone to Slupsk | 5,020.68 mi (8,080.00 km) |
| Keystone to Sochaczew | 5,206.82 mi (8,379.57 km) |
| Keystone to Sokolka | 5,288.62 mi (8,511.21 km) |
| Keystone to Sokolow Podlaski | 5,276.63 mi (8,491.91 km) |
| Keystone to Solec Kujawski | 5,105.62 mi (8,216.70 km) |
| Keystone to Sopot | 5,077.13 mi (8,170.85 km) |
