| Portchester to Sierpc | 894.83 mi (1,440.08 km) |
| Portchester to Skarzysko-Kamienna | 955.22 mi (1,537.28 km) |
| Portchester to Skawina | 921.37 mi (1,482.81 km) |
| Portchester to Skierniewice | 916.76 mi (1,475.38 km) |
| Portchester to Skoczow | 878.51 mi (1,413.83 km) |
| Portchester to Skwierzyna | 720.00 mi (1,158.72 km) |
| Portchester to Slawno | 782.81 mi (1,259.81 km) |
| Portchester to Slubice | 679.91 mi (1,094.21 km) |
| Portchester to Slupca | 819.17 mi (1,318.33 km) |
| Portchester to Slupsk | 798.19 mi (1,284.57 km) |
| Portchester to Sochaczew | 919.32 mi (1,479.50 km) |
| Portchester to Sokolka | 1,053.83 mi (1,695.98 km) |
| Portchester to Sokolow Podlaski | 1,003.83 mi (1,615.50 km) |
| Portchester to Solec Kujawski | 835.66 mi (1,344.87 km) |
| Portchester to Sopot | 858.86 mi (1,382.20 km) |
