| Castilleja de la Cuesta to Karlovo | 1,663.02 mi (2,676.38 km) |
| Castilleja de la Cuesta to Karnobat | 1,773.58 mi (2,854.30 km) |
| Castilleja de la Cuesta to Kavarna | 1,842.66 mi (2,965.47 km) |
| Castilleja de la Cuesta to Kazanlak | 1,693.08 mi (2,724.75 km) |
| Castilleja de la Cuesta to Knezha | 1,630.08 mi (2,623.36 km) |
| Castilleja de la Cuesta to Kostinbrod | 1,583.03 mi (2,547.64 km) |
| Castilleja de la Cuesta to Kozloduy | 1,614.41 mi (2,598.14 km) |
| Castilleja de la Cuesta to Kyustendil | 1,553.76 mi (2,500.54 km) |
| Castilleja de la Cuesta to Levski | 1,681.97 mi (2,706.87 km) |
| Castilleja de la Cuesta to Lom | 1,590.12 mi (2,559.04 km) |
| Castilleja de la Cuesta to Lovech | 1,660.11 mi (2,671.68 km) |
| Castilleja de la Cuesta to Lukovit | 1,632.71 mi (2,627.59 km) |
| Castilleja de la Cuesta to Lyaskovets | 1,710.33 mi (2,752.51 km) |
| Castilleja de la Cuesta to Mezdra | 1,609.00 mi (2,589.44 km) |
| Castilleja de la Cuesta to Momchilgrad | 1,693.30 mi (2,725.10 km) |
