| Clay to Karlovo | 5,612.90 mi (9,033.09 km) |
| Clay to Karnobat | 5,699.23 mi (9,172.02 km) |
| Clay to Kavarna | 5,715.76 mi (9,198.63 km) |
| Clay to Kazanlak | 5,637.62 mi (9,072.87 km) |
| Clay to Knezha | 5,547.63 mi (8,928.04 km) |
| Clay to Kostinbrod | 5,541.86 mi (8,918.77 km) |
| Clay to Kozloduy | 5,521.81 mi (8,886.49 km) |
| Clay to Kyustendil | 5,542.59 mi (8,919.94 km) |
| Clay to Levski | 5,594.73 mi (9,003.85 km) |
| Clay to Lom | 5,500.40 mi (8,852.04 km) |
| Clay to Lovech | 5,588.28 mi (8,993.46 km) |
| Clay to Lukovit | 5,563.67 mi (8,953.85 km) |
| Clay to Lyaskovets | 5,629.17 mi (9,059.28 km) |
| Clay to Mezdra | 5,547.20 mi (8,927.36 km) |
| Clay to Momchilgrad | 5,685.22 mi (9,149.47 km) |
