| Mercer Island to Sierpc | 5,143.81 mi (8,278.16 km) |
| Mercer Island to Skarzysko-Kamienna | 5,276.89 mi (8,492.34 km) |
| Mercer Island to Skawina | 5,327.90 mi (8,574.43 km) |
| Mercer Island to Skierniewice | 5,209.75 mi (8,384.28 km) |
| Mercer Island to Skoczow | 5,319.26 mi (8,560.53 km) |
| Mercer Island to Skwierzyna | 5,082.33 mi (8,179.22 km) |
| Mercer Island to Slawno | 4,997.73 mi (8,043.07 km) |
| Mercer Island to Slubice | 5,078.75 mi (8,173.47 km) |
| Mercer Island to Slupca | 5,146.69 mi (8,282.79 km) |
| Mercer Island to Slupsk | 4,997.75 mi (8,043.11 km) |
| Mercer Island to Sochaczew | 5,194.58 mi (8,359.87 km) |
| Mercer Island to Sokolka | 5,176.90 mi (8,331.42 km) |
| Mercer Island to Sokolow Podlaski | 5,219.46 mi (8,399.91 km) |
| Mercer Island to Solec Kujawski | 5,105.18 mi (8,216.00 km) |
| Mercer Island to Sopot | 5,026.78 mi (8,089.83 km) |
