| Southend to Sierpc | 805.36 mi (1,296.10 km) |
| Southend to Skarzysko-Kamienna | 870.03 mi (1,400.18 km) |
| Southend to Skawina | 840.21 mi (1,352.19 km) |
| Southend to Skierniewice | 829.42 mi (1,334.82 km) |
| Southend to Skoczow | 798.63 mi (1,285.26 km) |
| Southend to Skwierzyna | 631.13 mi (1,015.70 km) |
| Southend to Slawno | 690.58 mi (1,111.38 km) |
| Southend to Slubice | 591.76 mi (952.35 km) |
| Southend to Slupca | 731.15 mi (1,176.67 km) |
| Southend to Slupsk | 705.88 mi (1,136.01 km) |
| Southend to Sochaczew | 831.30 mi (1,337.85 km) |
| Southend to Sokolka | 963.39 mi (1,550.43 km) |
| Southend to Sokolow Podlaski | 915.25 mi (1,472.96 km) |
| Southend to Solec Kujawski | 745.74 mi (1,200.16 km) |
| Southend to Sopot | 766.73 mi (1,233.93 km) |
