| Grande-Synthe to Skarzysko-Kamienna | 806.10 mi (1,297.29 km) |
| Grande-Synthe to Skawina | 771.91 mi (1,242.26 km) |
| Grande-Synthe to Skierniewice | 768.67 mi (1,237.05 km) |
| Grande-Synthe to Skoczow | 729.21 mi (1,173.55 km) |
| Grande-Synthe to Skwierzyna | 573.49 mi (922.95 km) |
| Grande-Synthe to Slawno | 643.36 mi (1,035.38 km) |
| Grande-Synthe to Slubice | 532.75 mi (857.38 km) |
| Grande-Synthe to Slupca | 671.68 mi (1,080.96 km) |
| Grande-Synthe to Slupsk | 659.04 mi (1,060.63 km) |
| Grande-Synthe to Sochaczew | 771.72 mi (1,241.96 km) |
| Grande-Synthe to Sokolka | 908.99 mi (1,462.88 km) |
| Grande-Synthe to Sokolow Podlaski | 856.64 mi (1,378.63 km) |
| Grande-Synthe to Solec Kujawski | 690.31 mi (1,110.95 km) |
| Grande-Synthe to Sopot | 718.73 mi (1,156.68 km) |
| Grande-Synthe to Sosnowiec | 737.46 mi (1,186.83 km) |
