| Castel Volturno to Karlovo | 570.81 mi (918.64 km) |
| Castel Volturno to Karnobat | 680.71 mi (1,095.50 km) |
| Castel Volturno to Kavarna | 754.54 mi (1,214.32 km) |
| Castel Volturno to Kazanlak | 600.50 mi (966.41 km) |
| Castel Volturno to Knezha | 546.20 mi (879.03 km) |
| Castel Volturno to Kostinbrod | 493.07 mi (793.52 km) |
| Castel Volturno to Kozloduy | 534.75 mi (860.59 km) |
| Castel Volturno to Kyustendil | 460.22 mi (740.65 km) |
| Castel Volturno to Levski | 595.41 mi (958.22 km) |
| Castel Volturno to Lom | 512.14 mi (824.21 km) |
| Castel Volturno to Lovech | 571.73 mi (920.11 km) |
| Castel Volturno to Lukovit | 545.46 mi (877.83 km) |
| Castel Volturno to Lyaskovets | 620.95 mi (999.32 km) |
| Castel Volturno to Mezdra | 521.76 mi (839.69 km) |
| Castel Volturno to Momchilgrad | 597.50 mi (961.59 km) |
