| Sioux City to Slatina | 5,406.51 mi (8,700.93 km) |
| Sioux City to Slobozia | 5,493.35 mi (8,840.70 km) |
| Sioux City to Sovata | 5,314.52 mi (8,552.90 km) |
| Sioux City to Strehaia | 5,358.95 mi (8,624.39 km) |
| Sioux City to Suceava | 5,294.26 mi (8,520.29 km) |
| Sioux City to Targoviste | 5,414.89 mi (8,714.42 km) |
| Sioux City to Targu Frumos | 5,340.32 mi (8,594.41 km) |
| Sioux City to Targu Jiu | 5,339.97 mi (8,593.85 km) |
| Sioux City to Targu Lapus | 5,232.47 mi (8,420.84 km) |
| Sioux City to Targu Neamt | 5,321.23 mi (8,563.70 km) |
| Sioux City to Targu Ocna | 5,378.35 mi (8,655.63 km) |
| Sioux City to Targu Secuiesc | 5,378.92 mi (8,656.54 km) |
| Sioux City to Targu-Mures | 5,301.43 mi (8,531.84 km) |
| Sioux City to Tarnaveni | 5,303.70 mi (8,535.48 km) |
| Sioux City to Tasnad | 5,191.62 mi (8,355.10 km) |
