| Sioux City to Buhusi | 5,357.61 mi (8,622.24 km) |
| Sioux City to Bumbesti-Jiu | 5,335.86 mi (8,587.24 km) |
| Sioux City to Busteni | 5,391.50 mi (8,676.77 km) |
| Sioux City to Buzau | 5,444.89 mi (8,762.70 km) |
| Sioux City to Cajvana | 5,282.94 mi (8,502.06 km) |
| Sioux City to Calafat | 5,384.31 mi (8,665.21 km) |
| Sioux City to Calan | 5,294.97 mi (8,521.43 km) |
| Sioux City to Calarasi | 5,512.00 mi (8,870.71 km) |
| Sioux City to Campia Turzii | 5,280.12 mi (8,497.53 km) |
| Sioux City to Campina | 5,412.77 mi (8,711.01 km) |
| Sioux City to Campulung | 5,383.83 mi (8,664.44 km) |
| Sioux City to Campulung Moldovenesc | 5,279.63 mi (8,496.74 km) |
| Sioux City to Caracal | 5,422.67 mi (8,726.95 km) |
| Sioux City to Caransebes | 5,286.03 mi (8,507.04 km) |
| Sioux City to Carei | 5,177.35 mi (8,332.13 km) |
