| Romeoville to Sierpc | 4,623.25 mi (7,440.41 km) |
| Romeoville to Skarzysko-Kamienna | 4,742.42 mi (7,632.19 km) |
| Romeoville to Skawina | 4,757.08 mi (7,655.78 km) |
| Romeoville to Skierniewice | 4,679.32 mi (7,530.63 km) |
| Romeoville to Skoczow | 4,729.58 mi (7,611.52 km) |
| Romeoville to Skwierzyna | 4,498.06 mi (7,238.92 km) |
| Romeoville to Slawno | 4,463.91 mi (7,183.97 km) |
| Romeoville to Slubice | 4,476.78 mi (7,204.68 km) |
| Romeoville to Slupca | 4,589.68 mi (7,386.37 km) |
| Romeoville to Slupsk | 4,470.83 mi (7,195.10 km) |
| Romeoville to Sochaczew | 4,670.22 mi (7,515.99 km) |
| Romeoville to Sokolka | 4,720.99 mi (7,597.70 km) |
| Romeoville to Sokolow Podlaski | 4,727.52 mi (7,608.21 km) |
| Romeoville to Solec Kujawski | 4,568.14 mi (7,351.70 km) |
| Romeoville to Sopot | 4,520.44 mi (7,274.95 km) |
