| Leek to Sierpc | 898.68 mi (1,446.28 km) |
| Leek to Skarzysko-Kamienna | 978.73 mi (1,575.12 km) |
| Leek to Skawina | 959.57 mi (1,544.28 km) |
| Leek to Skierniewice | 931.42 mi (1,498.98 km) |
| Leek to Skoczow | 921.10 mi (1,482.37 km) |
| Leek to Skwierzyna | 730.12 mi (1,175.02 km) |
| Leek to Slawno | 766.81 mi (1,234.06 km) |
| Leek to Slubice | 694.57 mi (1,117.80 km) |
| Leek to Slupca | 831.89 mi (1,338.80 km) |
| Leek to Slupsk | 780.92 mi (1,256.76 km) |
| Leek to Sochaczew | 930.69 mi (1,497.81 km) |
| Leek to Sokolka | 1,049.60 mi (1,689.17 km) |
| Leek to Sokolow Podlaski | 1,011.37 mi (1,627.65 km) |
| Leek to Solec Kujawski | 837.63 mi (1,348.03 km) |
| Leek to Sopot | 842.67 mi (1,356.15 km) |
