| Obersiggenthal to Karlovo | 870.47 mi (1,400.89 km) |
| Obersiggenthal to Karnobat | 968.97 mi (1,559.41 km) |
| Obersiggenthal to Kavarna | 1,007.59 mi (1,621.56 km) |
| Obersiggenthal to Kazanlak | 897.94 mi (1,445.09 km) |
| Obersiggenthal to Knezha | 811.16 mi (1,305.44 km) |
| Obersiggenthal to Kostinbrod | 793.91 mi (1,277.68 km) |
| Obersiggenthal to Kozloduy | 787.06 mi (1,266.65 km) |
| Obersiggenthal to Kyustendil | 789.27 mi (1,270.20 km) |
| Obersiggenthal to Levski | 862.75 mi (1,388.46 km) |
| Obersiggenthal to Lom | 763.34 mi (1,228.48 km) |
| Obersiggenthal to Lovech | 850.85 mi (1,369.31 km) |
| Obersiggenthal to Lukovit | 824.00 mi (1,326.10 km) |
| Obersiggenthal to Lyaskovets | 897.19 mi (1,443.88 km) |
| Obersiggenthal to Mezdra | 804.59 mi (1,294.86 km) |
| Obersiggenthal to Momchilgrad | 935.97 mi (1,506.30 km) |
