| Castellarano to Karlovo | 713.16 mi (1,147.72 km) |
| Castellarano to Karnobat | 820.09 mi (1,319.81 km) |
| Castellarano to Kavarna | 874.07 mi (1,406.68 km) |
| Castellarano to Kazanlak | 742.70 mi (1,195.26 km) |
| Castellarano to Knezha | 664.01 mi (1,068.62 km) |
| Castellarano to Kostinbrod | 632.16 mi (1,017.36 km) |
| Castellarano to Kozloduy | 643.33 mi (1,035.34 km) |
| Castellarano to Kyustendil | 617.01 mi (992.98 km) |
| Castellarano to Levski | 717.47 mi (1,154.66 km) |
| Castellarano to Lom | 618.46 mi (995.31 km) |
| Castellarano to Lovech | 700.41 mi (1,127.20 km) |
| Castellarano to Lukovit | 672.36 mi (1,082.05 km) |
| Castellarano to Lyaskovets | 750.08 mi (1,207.14 km) |
| Castellarano to Mezdra | 650.20 mi (1,046.40 km) |
| Castellarano to Momchilgrad | 766.80 mi (1,234.04 km) |
