| SeaTac to Sierpc | 5,152.76 mi (8,292.57 km) |
| SeaTac to Skarzysko-Kamienna | 5,285.85 mi (8,506.75 km) |
| SeaTac to Skawina | 5,336.85 mi (8,588.83 km) |
| SeaTac to Skierniewice | 5,218.71 mi (8,398.70 km) |
| SeaTac to Skoczow | 5,328.20 mi (8,574.92 km) |
| SeaTac to Skwierzyna | 5,091.26 mi (8,193.60 km) |
| SeaTac to Slawno | 5,006.68 mi (8,057.47 km) |
| SeaTac to Slubice | 5,087.68 mi (8,187.83 km) |
| SeaTac to Slupca | 5,155.63 mi (8,297.19 km) |
| SeaTac to Slupsk | 5,006.71 mi (8,057.52 km) |
| SeaTac to Sochaczew | 5,203.54 mi (8,374.29 km) |
| SeaTac to Sokolka | 5,185.87 mi (8,345.85 km) |
| SeaTac to Sokolow Podlaski | 5,228.42 mi (8,414.33 km) |
| SeaTac to Solec Kujawski | 5,114.13 mi (8,230.40 km) |
| SeaTac to Sopot | 5,035.74 mi (8,104.24 km) |
