| Sioux City to Santa Venerina | 5,425.83 mi (8,732.03 km) |
| Sioux City to Santeramo in Colle | 5,332.50 mi (8,581.84 km) |
| Sioux City to Santo Stefano di Magra | 4,919.95 mi (7,917.90 km) |
| Sioux City to Santo Stino di Livenza | 4,947.40 mi (7,962.06 km) |
| Sioux City to Sarezzo | 4,862.28 mi (7,825.08 km) |
| Sioux City to Sarno | 5,252.71 mi (8,453.43 km) |
| Sioux City to Saronno | 4,821.04 mi (7,758.71 km) |
| Sioux City to Sarzana | 4,923.86 mi (7,924.19 km) |
| Sioux City to Sassari | 5,026.24 mi (8,088.95 km) |
| Sioux City to Sasso Marconi | 4,958.09 mi (7,979.27 km) |
| Sioux City to Sassuolo | 4,934.08 mi (7,940.63 km) |
| Sioux City to Sava | 5,381.49 mi (8,660.66 km) |
| Sioux City to Saviano | 5,244.14 mi (8,439.63 km) |
| Sioux City to Savigliano | 4,812.81 mi (7,745.47 km) |
| Sioux City to Savignano sul Panaro | 4,946.30 mi (7,960.31 km) |
