| Castel San Giorgio to Karlovo | 536.54 mi (863.48 km) |
| Castel San Giorgio to Karnobat | 645.73 mi (1,039.20 km) |
| Castel San Giorgio to Kavarna | 721.49 mi (1,161.12 km) |
| Castel San Giorgio to Kazanlak | 565.91 mi (910.75 km) |
| Castel San Giorgio to Knezha | 515.70 mi (829.94 km) |
| Castel San Giorgio to Kostinbrod | 460.38 mi (740.90 km) |
| Castel San Giorgio to Kozloduy | 505.78 mi (813.98 km) |
| Castel San Giorgio to Kyustendil | 425.53 mi (684.83 km) |
| Castel San Giorgio to Levski | 563.60 mi (907.03 km) |
| Castel San Giorgio to Lom | 483.94 mi (778.83 km) |
| Castel San Giorgio to Lovech | 539.31 mi (867.94 km) |
| Castel San Giorgio to Lukovit | 513.67 mi (826.67 km) |
| Castel San Giorgio to Lyaskovets | 587.87 mi (946.09 km) |
| Castel San Giorgio to Mezdra | 490.12 mi (788.77 km) |
| Castel San Giorgio to Momchilgrad | 559.52 mi (900.46 km) |
