| Sioux Falls to Karlovo | 5,470.73 mi (8,804.29 km) |
| Sioux Falls to Karnobat | 5,539.92 mi (8,915.64 km) |
| Sioux Falls to Kavarna | 5,537.39 mi (8,911.57 km) |
| Sioux Falls to Kazanlak | 5,491.06 mi (8,837.01 km) |
| Sioux Falls to Knezha | 5,401.79 mi (8,693.34 km) |
| Sioux Falls to Kostinbrod | 5,410.21 mi (8,706.90 km) |
| Sioux Falls to Kozloduy | 5,375.55 mi (8,651.11 km) |
| Sioux Falls to Kyustendil | 5,420.98 mi (8,724.23 km) |
| Sioux Falls to Levski | 5,442.21 mi (8,758.40 km) |
| Sioux Falls to Lom | 5,357.45 mi (8,621.99 km) |
| Sioux Falls to Lovech | 5,441.50 mi (8,757.25 km) |
| Sioux Falls to Lukovit | 5,420.45 mi (8,723.38 km) |
| Sioux Falls to Lyaskovets | 5,474.96 mi (8,811.09 km) |
| Sioux Falls to Mezdra | 5,408.15 mi (8,703.57 km) |
| Sioux Falls to Momchilgrad | 5,550.12 mi (8,932.06 km) |
