| Sioux City to Santa Ursula | 4,435.51 mi (7,138.26 km) |
| Sioux City to Santander | 4,412.35 mi (7,101.00 km) |
| Sioux City to Santany | 4,869.90 mi (7,837.34 km) |
| Sioux City to Santiago de Compostela | 4,236.56 mi (6,818.08 km) |
| Sioux City to Santiago del Teide | 4,424.97 mi (7,121.31 km) |
| Sioux City to Santiponce | 4,558.62 mi (7,336.39 km) |
| Sioux City to Santomera | 4,750.16 mi (7,644.65 km) |
| Sioux City to Santona | 4,427.49 mi (7,125.35 km) |
| Sioux City to Santurce-Antiguo | 4,449.40 mi (7,160.62 km) |
| Sioux City to Sarria | 4,287.96 mi (6,900.81 km) |
| Sioux City to Sauzal | 4,436.02 mi (7,139.08 km) |
| Sioux City to Sedavi | 4,720.35 mi (7,596.67 km) |
| Sioux City to Segorbe | 4,697.96 mi (7,560.63 km) |
| Sioux City to Segovia | 4,499.64 mi (7,241.47 km) |
| Sioux City to Senmanat | 4,731.41 mi (7,614.47 km) |
