| Horstel to Karlovo | 1,040.27 mi (1,674.15 km) |
| Horstel to Karnobat | 1,119.64 mi (1,801.88 km) |
| Horstel to Kavarna | 1,133.91 mi (1,824.86 km) |
| Horstel to Kazanlak | 1,062.73 mi (1,710.30 km) |
| Horstel to Knezha | 972.56 mi (1,565.18 km) |
| Horstel to Kostinbrod | 976.17 mi (1,570.99 km) |
| Horstel to Kozloduy | 946.36 mi (1,523.03 km) |
| Horstel to Kyustendil | 985.89 mi (1,586.64 km) |
| Horstel to Levski | 1,016.88 mi (1,636.52 km) |
| Horstel to Lom | 926.65 mi (1,491.30 km) |
| Horstel to Lovech | 1,012.98 mi (1,630.23 km) |
| Horstel to Lukovit | 990.14 mi (1,593.47 km) |
| Horstel to Lyaskovets | 1,050.87 mi (1,691.22 km) |
| Horstel to Mezdra | 976.14 mi (1,570.94 km) |
| Horstel to Momchilgrad | 1,117.59 mi (1,798.58 km) |
