| West Des Moines to Sinop | 5,842.78 mi (9,403.05 km) |
| West Des Moines to Siran | 6,064.63 mi (9,760.08 km) |
| West Des Moines to Sirnak | 6,316.22 mi (10,164.98 km) |
| West Des Moines to Sirvan | 6,271.91 mi (10,093.66 km) |
| West Des Moines to Sivas | 6,027.49 mi (9,700.31 km) |
| West Des Moines to Sivasli | 5,862.64 mi (9,435.01 km) |
| West Des Moines to Siverek | 6,211.27 mi (9,996.07 km) |
| West Des Moines to Sivrice | 6,170.80 mi (9,930.95 km) |
| West Des Moines to Sivrihisar | 5,872.00 mi (9,450.07 km) |
| West Des Moines to Sogut | 5,796.55 mi (9,328.64 km) |
| West Des Moines to Sogutlu | 5,758.83 mi (9,267.94 km) |
| West Des Moines to Soke | 5,823.25 mi (9,371.61 km) |
| West Des Moines to Solhan | 6,191.04 mi (9,963.52 km) |
| West Des Moines to Soma | 5,754.12 mi (9,260.36 km) |
| West Des Moines to Sorgun | 5,968.08 mi (9,604.69 km) |
