| Sioux City to Kidricevo | 5,023.61 mi (8,084.72 km) |
| Sioux City to Kobarid | 4,954.69 mi (7,973.81 km) |
| Sioux City to Kobilje | 5,030.40 mi (8,095.64 km) |
| Sioux City to Kocevje | 5,028.03 mi (8,091.84 km) |
| Sioux City to Komen | 4,981.10 mi (8,016.31 km) |
| Sioux City to Komenda | 4,989.92 mi (8,030.50 km) |
| Sioux City to Koper | 4,993.10 mi (8,035.62 km) |
| Sioux City to Kostanjevica na Krki | 5,037.83 mi (8,107.60 km) |
| Sioux City to Kostel | 5,036.24 mi (8,105.04 km) |
| Sioux City to Kozje | 5,031.45 mi (8,097.34 km) |
| Sioux City to Kranj | 4,982.72 mi (8,018.91 km) |
| Sioux City to Kranjska Gora | 4,950.67 mi (7,967.33 km) |
| Sioux City to Krizevci | 5,027.61 mi (8,091.16 km) |
| Sioux City to Krsko | 5,034.84 mi (8,102.78 km) |
| Sioux City to Kuzma | 5,012.62 mi (8,067.04 km) |
