| Williamsport to Sierpc | 4,269.33 mi (6,870.82 km) |
| Williamsport to Skarzysko-Kamienna | 4,380.19 mi (7,049.23 km) |
| Williamsport to Skawina | 4,383.77 mi (7,055.00 km) |
| Williamsport to Skierniewice | 4,320.47 mi (6,953.13 km) |
| Williamsport to Skoczow | 4,351.73 mi (7,003.44 km) |
| Williamsport to Skwierzyna | 4,129.71 mi (6,646.12 km) |
| Williamsport to Slawno | 4,111.87 mi (6,617.42 km) |
| Williamsport to Slubice | 4,103.96 mi (6,604.68 km) |
| Williamsport to Slupca | 4,226.14 mi (6,801.32 km) |
| Williamsport to Slupsk | 4,120.60 mi (6,631.47 km) |
| Williamsport to Sochaczew | 4,313.48 mi (6,941.88 km) |
| Williamsport to Sokolka | 4,382.81 mi (7,053.45 km) |
| Williamsport to Sokolow Podlaski | 4,378.36 mi (7,046.29 km) |
| Williamsport to Solec Kujawski | 4,211.29 mi (6,777.42 km) |
| Williamsport to Sopot | 4,174.56 mi (6,718.31 km) |
