| Sioux City to Jozefow | 4,914.49 mi (7,909.11 km) |
| Sioux City to Kalisz | 4,838.65 mi (7,787.05 km) |
| Sioux City to Kamien Pomorski | 4,633.51 mi (7,456.92 km) |
| Sioux City to Kamienna Gora | 4,821.62 mi (7,759.65 km) |
| Sioux City to Karczew | 4,917.48 mi (7,913.92 km) |
| Sioux City to Kartuzy | 4,718.31 mi (7,593.39 km) |
| Sioux City to Katowice | 4,940.21 mi (7,950.50 km) |
| Sioux City to Kedzierzyn-Kozle | 4,910.70 mi (7,903.01 km) |
| Sioux City to Kepno | 4,858.63 mi (7,819.22 km) |
| Sioux City to Ketrzyn | 4,821.64 mi (7,759.67 km) |
| Sioux City to Kety | 4,964.49 mi (7,989.58 km) |
| Sioux City to Kielce | 4,959.55 mi (7,981.63 km) |
| Sioux City to Kielczow | 4,840.56 mi (7,790.14 km) |
| Sioux City to Klobuck | 4,905.72 mi (7,895.00 km) |
| Sioux City to Klodzko | 4,857.88 mi (7,818.00 km) |
