| Sioux City to Koscian | 4,779.15 mi (7,691.30 km) |
| Sioux City to Koscielisko | 5,015.87 mi (8,072.26 km) |
| Sioux City to Koscierzyna | 4,722.34 mi (7,599.88 km) |
| Sioux City to Kostrzyn | 4,781.88 mi (7,695.69 km) |
| Sioux City to Kostrzyn nad Odra | 4,693.99 mi (7,554.25 km) |
| Sioux City to Koszalin | 4,665.27 mi (7,508.02 km) |
| Sioux City to Kowary | 4,814.87 mi (7,748.79 km) |
| Sioux City to Kozienice | 4,951.85 mi (7,969.23 km) |
| Sioux City to Kozuchow | 4,762.27 mi (7,664.14 km) |
| Sioux City to Kozy | 4,964.06 mi (7,988.88 km) |
| Sioux City to Krakow | 4,978.82 mi (8,012.63 km) |
| Sioux City to Krapkowice | 4,897.73 mi (7,882.14 km) |
| Sioux City to Krasnik | 5,004.70 mi (8,054.28 km) |
| Sioux City to Krasnystaw | 5,029.71 mi (8,094.54 km) |
| Sioux City to Krosno | 5,053.26 mi (8,132.43 km) |
