| Aiken to Karlovo | 5,422.49 mi (8,726.66 km) |
| Aiken to Karnobat | 5,512.39 mi (8,871.33 km) |
| Aiken to Kavarna | 5,533.57 mi (8,905.42 km) |
| Aiken to Kazanlak | 5,448.10 mi (8,767.86 km) |
| Aiken to Knezha | 5,358.59 mi (8,623.82 km) |
| Aiken to Kostinbrod | 5,349.43 mi (8,609.08 km) |
| Aiken to Kozloduy | 5,333.07 mi (8,582.74 km) |
| Aiken to Kyustendil | 5,347.76 mi (8,606.39 km) |
| Aiken to Levski | 5,406.99 mi (8,701.71 km) |
| Aiken to Lom | 5,311.01 mi (8,547.24 km) |
| Aiken to Lovech | 5,399.17 mi (8,689.13 km) |
| Aiken to Lukovit | 5,373.87 mi (8,648.41 km) |
| Aiken to Lyaskovets | 5,441.59 mi (8,757.40 km) |
| Aiken to Mezdra | 5,356.52 mi (8,620.48 km) |
| Aiken to Momchilgrad | 5,492.58 mi (8,839.46 km) |
