| Keller to Karlovo | 6,056.68 mi (9,747.28 km) |
| Keller to Karnobat | 6,134.97 mi (9,873.28 km) |
| Keller to Kavarna | 6,141.84 mi (9,884.33 km) |
| Keller to Kazanlak | 6,079.37 mi (9,783.81 km) |
| Keller to Knezha | 5,989.19 mi (9,638.67 km) |
| Keller to Kostinbrod | 5,990.36 mi (9,640.56 km) |
| Keller to Kozloduy | 5,963.01 mi (9,596.53 km) |
| Keller to Kyustendil | 5,995.95 mi (9,649.54 km) |
| Keller to Levski | 6,033.26 mi (9,709.59 km) |
| Keller to Lom | 5,943.11 mi (9,564.51 km) |
| Keller to Lovech | 6,029.63 mi (9,703.74 km) |
| Keller to Lukovit | 6,006.63 mi (9,666.74 km) |
| Keller to Lyaskovets | 6,067.05 mi (9,763.98 km) |
| Keller to Mezdra | 5,992.11 mi (9,643.38 km) |
| Keller to Momchilgrad | 6,132.91 mi (9,869.97 km) |
