| Hartselle to Karlovo | 5,588.91 mi (8,994.49 km) |
| Hartselle to Karnobat | 5,674.37 mi (9,132.01 km) |
| Hartselle to Kavarna | 5,689.84 mi (9,156.91 km) |
| Hartselle to Kazanlak | 5,613.41 mi (9,033.91 km) |
| Hartselle to Knezha | 5,523.34 mi (8,888.96 km) |
| Hartselle to Kostinbrod | 5,518.39 mi (8,880.99 km) |
| Hartselle to Kozloduy | 5,497.47 mi (8,847.32 km) |
| Hartselle to Kyustendil | 5,519.70 mi (8,883.10 km) |
| Hartselle to Levski | 5,570.13 mi (8,964.25 km) |
| Hartselle to Lom | 5,476.22 mi (8,813.13 km) |
| Hartselle to Lovech | 5,563.99 mi (8,954.38 km) |
| Hartselle to Lukovit | 5,539.55 mi (8,915.05 km) |
| Hartselle to Lyaskovets | 5,604.52 mi (9,019.60 km) |
| Hartselle to Mezdra | 5,523.31 mi (8,888.90 km) |
| Hartselle to Momchilgrad | 5,661.73 mi (9,111.68 km) |
