| Sioux City to Kanjiza | 5,182.47 mi (8,340.38 km) |
| Sioux City to Kikinda | 5,207.37 mi (8,380.45 km) |
| Sioux City to Kladovo | 5,340.78 mi (8,595.15 km) |
| Sioux City to Knic | 5,313.69 mi (8,551.55 km) |
| Sioux City to Knjazevac | 5,392.33 mi (8,678.11 km) |
| Sioux City to Koceljeva | 5,254.99 mi (8,457.09 km) |
| Sioux City to Kosjeric | 5,282.52 mi (8,501.39 km) |
| Sioux City to Kovacica | 5,249.63 mi (8,448.46 km) |
| Sioux City to Kovin | 5,279.47 mi (8,496.48 km) |
| Sioux City to Kragujevac | 5,316.16 mi (8,555.53 km) |
| Sioux City to Kraljevo | 5,322.56 mi (8,565.83 km) |
| Sioux City to Krupanj | 5,245.40 mi (8,441.66 km) |
| Sioux City to Krusevac | 5,351.20 mi (8,611.92 km) |
| Sioux City to Kucevo | 5,316.23 mi (8,555.64 km) |
| Sioux City to Kula | 5,188.93 mi (8,350.78 km) |
