| Castrolibero to Karlovo | 504.04 mi (811.17 km) |
| Castrolibero to Karnobat | 606.83 mi (976.60 km) |
| Castrolibero to Kavarna | 689.51 mi (1,109.67 km) |
| Castrolibero to Kazanlak | 530.99 mi (854.54 km) |
| Castrolibero to Knezha | 500.07 mi (804.78 km) |
| Castrolibero to Kostinbrod | 438.04 mi (704.95 km) |
| Castrolibero to Kozloduy | 496.61 mi (799.22 km) |
| Castrolibero to Kyustendil | 396.06 mi (637.40 km) |
| Castrolibero to Levski | 540.89 mi (870.48 km) |
| Castrolibero to Lom | 478.63 mi (770.27 km) |
| Castrolibero to Lovech | 514.87 mi (828.61 km) |
| Castrolibero to Lukovit | 492.83 mi (793.13 km) |
| Castrolibero to Lyaskovets | 559.02 mi (899.65 km) |
| Castrolibero to Mezdra | 470.89 mi (757.82 km) |
| Castrolibero to Momchilgrad | 508.09 mi (817.70 km) |
