| Boston to Sierpc | 817.46 mi (1,315.57 km) |
| Boston to Skarzysko-Kamienna | 895.68 mi (1,441.46 km) |
| Boston to Skawina | 875.92 mi (1,409.66 km) |
| Boston to Skierniewice | 849.03 mi (1,366.38 km) |
| Boston to Skoczow | 837.43 mi (1,347.71 km) |
| Boston to Skwierzyna | 647.83 mi (1,042.58 km) |
| Boston to Slawno | 688.50 mi (1,108.03 km) |
| Boston to Slubice | 611.79 mi (984.58 km) |
| Boston to Slupca | 749.54 mi (1,206.27 km) |
| Boston to Slupsk | 702.90 mi (1,131.21 km) |
| Boston to Sochaczew | 848.63 mi (1,365.75 km) |
| Boston to Sokolka | 969.84 mi (1,560.81 km) |
| Boston to Sokolow Podlaski | 929.87 mi (1,496.48 km) |
| Boston to Solec Kujawski | 756.54 mi (1,217.53 km) |
| Boston to Sopot | 764.63 mi (1,230.56 km) |
