| Idanha-a-Nova to Sierpc | 1,548.98 mi (2,492.84 km) |
| Idanha-a-Nova to Skarzysko-Kamienna | 1,553.29 mi (2,499.78 km) |
| Idanha-a-Nova to Skawina | 1,483.62 mi (2,387.66 km) |
| Idanha-a-Nova to Skierniewice | 1,542.80 mi (2,482.89 km) |
| Idanha-a-Nova to Skoczow | 1,435.48 mi (2,310.19 km) |
| Idanha-a-Nova to Skwierzyna | 1,385.15 mi (2,229.18 km) |
| Idanha-a-Nova to Slawno | 1,489.43 mi (2,397.01 km) |
| Idanha-a-Nova to Slubice | 1,342.55 mi (2,160.62 km) |
| Idanha-a-Nova to Slupca | 1,463.46 mi (2,355.21 km) |
| Idanha-a-Nova to Slupsk | 1,505.44 mi (2,422.78 km) |
| Idanha-a-Nova to Sochaczew | 1,552.99 mi (2,499.29 km) |
| Idanha-a-Nova to Sokolka | 1,709.39 mi (2,751.00 km) |
| Idanha-a-Nova to Sokolow Podlaski | 1,636.58 mi (2,633.83 km) |
| Idanha-a-Nova to Solec Kujawski | 1,501.28 mi (2,416.08 km) |
| Idanha-a-Nova to Sopot | 1,557.99 mi (2,507.35 km) |
