| Horley to Karlovo | 1,309.36 mi (2,107.21 km) |
| Horley to Karnobat | 1,400.55 mi (2,253.97 km) |
| Horley to Kavarna | 1,427.41 mi (2,297.20 km) |
| Horley to Kazanlak | 1,335.04 mi (2,148.53 km) |
| Horley to Knezha | 1,245.71 mi (2,004.78 km) |
| Horley to Kostinbrod | 1,236.79 mi (1,990.42 km) |
| Horley to Kozloduy | 1,220.32 mi (1,963.92 km) |
| Horley to Kyustendil | 1,237.11 mi (1,990.93 km) |
| Horley to Levski | 1,294.70 mi (2,083.62 km) |
| Horley to Lom | 1,198.04 mi (1,928.06 km) |
| Horley to Lovech | 1,286.24 mi (2,070.00 km) |
| Horley to Lukovit | 1,260.78 mi (2,029.04 km) |
| Horley to Lyaskovets | 1,329.36 mi (2,139.39 km) |
| Horley to Mezdra | 1,243.39 mi (2,001.04 km) |
| Horley to Momchilgrad | 1,380.10 mi (2,221.06 km) |
