| Penkridge to Karlovo | 1,420.92 mi (2,286.76 km) |
| Penkridge to Karnobat | 1,508.37 mi (2,427.48 km) |
| Penkridge to Kavarna | 1,530.22 mi (2,462.65 km) |
| Penkridge to Kazanlak | 1,445.65 mi (2,326.55 km) |
| Penkridge to Knezha | 1,355.72 mi (2,181.82 km) |
| Penkridge to Kostinbrod | 1,350.63 mi (2,173.62 km) |
| Penkridge to Kozloduy | 1,329.96 mi (2,140.37 km) |
| Penkridge to Kyustendil | 1,353.51 mi (2,178.27 km) |
| Penkridge to Levski | 1,403.30 mi (2,258.39 km) |
| Penkridge to Lom | 1,308.43 mi (2,105.72 km) |
| Penkridge to Lovech | 1,396.37 mi (2,247.23 km) |
| Penkridge to Lukovit | 1,371.67 mi (2,207.49 km) |
| Penkridge to Lyaskovets | 1,437.83 mi (2,313.97 km) |
| Penkridge to Mezdra | 1,355.28 mi (2,181.11 km) |
| Penkridge to Momchilgrad | 1,493.92 mi (2,404.23 km) |
