| Niksar to Sierpc | 1,174.48 mi (1,890.14 km) |
| Niksar to Skarzysko-Kamienna | 1,057.01 mi (1,701.09 km) |
| Niksar to Skawina | 1,051.97 mi (1,692.98 km) |
| Niksar to Skierniewice | 1,118.97 mi (1,800.80 km) |
| Niksar to Skoczow | 1,085.78 mi (1,747.40 km) |
| Niksar to Skwierzyna | 1,305.83 mi (2,101.53 km) |
| Niksar to Slawno | 1,333.83 mi (2,146.59 km) |
| Niksar to Slubice | 1,331.32 mi (2,142.56 km) |
| Niksar to Slupca | 1,210.72 mi (1,948.47 km) |
| Niksar to Slupsk | 1,327.09 mi (2,135.74 km) |
| Niksar to Sochaczew | 1,127.66 mi (1,814.79 km) |
| Niksar to Sokolka | 1,085.60 mi (1,747.10 km) |
| Niksar to Sokolow Podlaski | 1,071.31 mi (1,724.11 km) |
| Niksar to Solec Kujawski | 1,229.86 mi (1,979.27 km) |
| Niksar to Sopot | 1,278.75 mi (2,057.95 km) |
