| South Sioux City to Karis | 4,586.59 mi (7,381.41 km) |
| South Sioux City to Karkkila | 4,576.81 mi (7,365.66 km) |
| South Sioux City to Kauhajoki | 4,436.51 mi (7,139.87 km) |
| South Sioux City to Kauhava | 4,424.44 mi (7,120.44 km) |
| South Sioux City to Kauniainen | 4,604.81 mi (7,410.73 km) |
| South Sioux City to Kemi | 4,328.61 mi (6,966.23 km) |
| South Sioux City to Kemijarvi | 4,336.29 mi (6,978.59 km) |
| South Sioux City to Kempele | 4,388.16 mi (7,062.05 km) |
| South Sioux City to Kerava | 4,604.22 mi (7,409.77 km) |
| South Sioux City to Keuruu | 4,502.38 mi (7,245.88 km) |
| South Sioux City to Kiiminki | 4,382.68 mi (7,053.24 km) |
| South Sioux City to Kirkkonummi | 4,602.32 mi (7,406.72 km) |
| South Sioux City to Kitee | 4,627.73 mi (7,447.61 km) |
| South Sioux City to Kiuruvesi | 4,474.13 mi (7,200.42 km) |
| South Sioux City to Kivisto | 4,602.09 mi (7,406.34 km) |
