| Frankenthal to Karlovo | 918.22 mi (1,477.73 km) |
| Frankenthal to Karnobat | 1,008.44 mi (1,622.93 km) |
| Frankenthal to Kavarna | 1,035.84 mi (1,667.02 km) |
| Frankenthal to Kazanlak | 943.53 mi (1,518.46 km) |
| Frankenthal to Knezha | 853.97 mi (1,374.33 km) |
| Frankenthal to Kostinbrod | 846.96 mi (1,363.05 km) |
| Frankenthal to Kozloduy | 828.48 mi (1,333.30 km) |
| Frankenthal to Kyustendil | 849.60 mi (1,367.30 km) |
| Frankenthal to Levski | 902.67 mi (1,452.70 km) |
| Frankenthal to Lom | 806.40 mi (1,297.77 km) |
| Frankenthal to Lovech | 894.55 mi (1,439.64 km) |
| Frankenthal to Lukovit | 869.34 mi (1,399.07 km) |
| Frankenthal to Lyaskovets | 937.31 mi (1,508.46 km) |
| Frankenthal to Mezdra | 852.38 mi (1,371.77 km) |
| Frankenthal to Momchilgrad | 990.30 mi (1,593.74 km) |
