| SeaTac to Senftenberg | 5,126.74 mi (8,250.68 km) |
| SeaTac to Siegburg | 5,016.53 mi (8,073.33 km) |
| SeaTac to Siegen | 5,031.04 mi (8,096.67 km) |
| SeaTac to Sigmaringen | 5,223.34 mi (8,406.15 km) |
| SeaTac to Simbach am Inn | 5,301.19 mi (8,531.44 km) |
| SeaTac to Simmerath | 5,006.35 mi (8,056.94 km) |
| SeaTac to Sindelfingen | 5,181.34 mi (8,338.56 km) |
| SeaTac to Sinsheim | 5,146.97 mi (8,283.25 km) |
| SeaTac to Sinzheim | 5,158.31 mi (8,301.50 km) |
| SeaTac to Sinzig | 5,032.49 mi (8,099.01 km) |
| SeaTac to Soest | 4,993.21 mi (8,035.79 km) |
| SeaTac to Solingen | 4,992.53 mi (8,034.70 km) |
| SeaTac to Soltau | 4,949.71 mi (7,965.79 km) |
| SeaTac to Sommerda | 5,085.55 mi (8,184.41 km) |
| SeaTac to Sondershausen | 5,067.84 mi (8,155.91 km) |
