| Hartford to Sierpc | 4,087.34 mi (6,577.94 km) |
| Hartford to Skarzysko-Kamienna | 4,195.23 mi (6,751.57 km) |
| Hartford to Skawina | 4,195.38 mi (6,751.81 km) |
| Hartford to Skierniewice | 4,136.76 mi (6,657.47 km) |
| Hartford to Skoczow | 4,162.04 mi (6,698.16 km) |
| Hartford to Skwierzyna | 3,943.63 mi (6,346.66 km) |
| Hartford to Slawno | 3,931.02 mi (6,326.37 km) |
| Hartford to Slubice | 3,916.56 mi (6,303.09 km) |
| Hartford to Slupca | 4,041.26 mi (6,503.79 km) |
| Hartford to Slupsk | 3,940.30 mi (6,341.30 km) |
| Hartford to Sochaczew | 4,130.46 mi (6,647.33 km) |
| Hartford to Sokolka | 4,205.45 mi (6,768.02 km) |
| Hartford to Sokolow Podlaski | 4,197.51 mi (6,755.24 km) |
| Hartford to Solec Kujawski | 4,028.57 mi (6,483.36 km) |
| Hartford to Sopot | 3,995.46 mi (6,430.08 km) |
