| Boulder City to Sierpc | 5,728.33 mi (9,218.85 km) |
| Boulder City to Skarzysko-Kamienna | 5,858.78 mi (9,428.80 km) |
| Boulder City to Skawina | 5,895.78 mi (9,488.34 km) |
| Boulder City to Skierniewice | 5,791.76 mi (9,320.94 km) |
| Boulder City to Skoczow | 5,878.92 mi (9,461.21 km) |
| Boulder City to Skwierzyna | 5,638.85 mi (9,074.85 km) |
| Boulder City to Slawno | 5,573.35 mi (8,969.44 km) |
| Boulder City to Slubice | 5,627.61 mi (9,056.76 km) |
| Boulder City to Slupca | 5,716.21 mi (9,199.35 km) |
| Boulder City to Slupsk | 5,576.20 mi (8,974.03 km) |
| Boulder City to Sochaczew | 5,778.73 mi (9,299.97 km) |
| Boulder City to Sokolka | 5,788.02 mi (9,314.92 km) |
| Boulder City to Sokolow Podlaski | 5,817.31 mi (9,362.06 km) |
| Boulder City to Solec Kujawski | 5,682.03 mi (9,144.34 km) |
| Boulder City to Sopot | 5,614.31 mi (9,035.36 km) |
