| Ulbroka to Karlovo | 987.59 mi (1,589.38 km) |
| Ulbroka to Karnobat | 995.15 mi (1,601.54 km) |
| Ulbroka to Kavarna | 949.39 mi (1,527.90 km) |
| Ulbroka to Kazanlak | 990.40 mi (1,593.90 km) |
| Ulbroka to Knezha | 928.19 mi (1,493.78 km) |
| Ulbroka to Kostinbrod | 976.49 mi (1,571.50 km) |
| Ulbroka to Kozloduy | 908.89 mi (1,462.72 km) |
| Ulbroka to Kyustendil | 1,014.68 mi (1,632.97 km) |
| Ulbroka to Levski | 938.10 mi (1,509.72 km) |
| Ulbroka to Lom | 906.80 mi (1,459.35 km) |
| Ulbroka to Lovech | 953.58 mi (1,534.64 km) |
| Ulbroka to Lukovit | 948.89 mi (1,527.10 km) |
| Ulbroka to Lyaskovets | 957.85 mi (1,541.51 km) |
| Ulbroka to Mezdra | 952.68 mi (1,533.18 km) |
| Ulbroka to Momchilgrad | 1,065.23 mi (1,714.32 km) |
