| Potters Bar to Sierpc | 840.15 mi (1,352.09 km) |
| Potters Bar to Skarzysko-Kamienna | 907.09 mi (1,459.82 km) |
| Potters Bar to Skawina | 878.50 mi (1,413.80 km) |
| Potters Bar to Skierniewice | 865.53 mi (1,392.94 km) |
| Potters Bar to Skoczow | 837.20 mi (1,347.34 km) |
| Potters Bar to Skwierzyna | 666.48 mi (1,072.60 km) |
| Potters Bar to Slawno | 722.29 mi (1,162.41 km) |
| Potters Bar to Slubice | 627.61 mi (1,010.04 km) |
| Potters Bar to Slupca | 766.95 mi (1,234.28 km) |
| Potters Bar to Slupsk | 737.42 mi (1,186.76 km) |
| Potters Bar to Sochaczew | 867.04 mi (1,395.37 km) |
| Potters Bar to Sokolka | 997.28 mi (1,604.96 km) |
| Potters Bar to Sokolow Podlaski | 950.61 mi (1,529.86 km) |
| Potters Bar to Solec Kujawski | 780.21 mi (1,255.63 km) |
| Potters Bar to Sopot | 798.57 mi (1,285.18 km) |
