| Knightdale to Karlovo | 5,181.73 mi (8,339.19 km) |
| Knightdale to Karnobat | 5,271.85 mi (8,484.22 km) |
| Knightdale to Kavarna | 5,293.43 mi (8,518.95 km) |
| Knightdale to Kazanlak | 5,207.38 mi (8,380.48 km) |
| Knightdale to Knezha | 5,117.92 mi (8,236.49 km) |
| Knightdale to Kostinbrod | 5,108.57 mi (8,221.46 km) |
| Knightdale to Kozloduy | 5,092.41 mi (8,195.45 km) |
| Knightdale to Kyustendil | 5,106.81 mi (8,218.62 km) |
| Knightdale to Levski | 5,166.40 mi (8,314.51 km) |
| Knightdale to Lom | 5,070.32 mi (8,159.89 km) |
| Knightdale to Lovech | 5,158.49 mi (8,301.79 km) |
| Knightdale to Lukovit | 5,133.15 mi (8,261.01 km) |
| Knightdale to Lyaskovets | 5,201.01 mi (8,370.21 km) |
| Knightdale to Mezdra | 5,115.75 mi (8,233.00 km) |
| Knightdale to Momchilgrad | 5,251.71 mi (8,451.81 km) |
