| Sioux City to Krosno Odrzanskie | 4,733.33 mi (7,617.56 km) |
| Sioux City to Krotoszyn | 4,822.40 mi (7,760.90 km) |
| Sioux City to Kruszwica | 4,801.73 mi (7,727.64 km) |
| Sioux City to Krynica | 5,042.67 mi (8,115.39 km) |
| Sioux City to Krzeszowice | 4,965.88 mi (7,991.81 km) |
| Sioux City to Kudowa-Zdroj | 4,844.59 mi (7,796.61 km) |
| Sioux City to Kutno | 4,854.35 mi (7,812.32 km) |
| Sioux City to Kwidzyn | 4,768.34 mi (7,673.90 km) |
| Sioux City to Lancut | 5,048.37 mi (8,124.57 km) |
| Sioux City to Lapy | 4,919.17 mi (7,916.65 km) |
| Sioux City to Lask | 4,878.82 mi (7,851.70 km) |
| Sioux City to Laziska Gorne | 4,940.76 mi (7,951.39 km) |
| Sioux City to Lebork | 4,694.89 mi (7,555.70 km) |
| Sioux City to Leczna | 5,004.77 mi (8,054.40 km) |
| Sioux City to Leczyca | 4,858.33 mi (7,818.72 km) |
