| Sedro-Woolley to Sinop | 6,031.35 mi (9,706.51 km) |
| Sedro-Woolley to Siran | 6,203.07 mi (9,982.87 km) |
| Sedro-Woolley to Sirnak | 6,418.67 mi (10,329.86 km) |
| Sedro-Woolley to Sirvan | 6,377.55 mi (10,263.67 km) |
| Sedro-Woolley to Sivas | 6,207.71 mi (9,990.35 km) |
| Sedro-Woolley to Sivasli | 6,184.24 mi (9,952.57 km) |
| Sedro-Woolley to Siverek | 6,369.98 mi (10,251.49 km) |
| Sedro-Woolley to Sivrice | 6,322.86 mi (10,175.65 km) |
| Sedro-Woolley to Sivrihisar | 6,150.70 mi (9,898.60 km) |
| Sedro-Woolley to Sogut | 6,091.61 mi (9,803.50 km) |
| Sedro-Woolley to Sogutlu | 6,038.47 mi (9,717.98 km) |
| Sedro-Woolley to Soke | 6,192.17 mi (9,965.33 km) |
| Sedro-Woolley to Solhan | 6,306.36 mi (10,149.11 km) |
| Sedro-Woolley to Soma | 6,102.13 mi (9,820.43 km) |
| Sedro-Woolley to Sorgun | 6,179.68 mi (9,945.24 km) |
