| Olsberg to Karlovo | 972.83 mi (1,565.62 km) |
| Olsberg to Karnobat | 1,054.91 mi (1,697.72 km) |
| Olsberg to Kavarna | 1,072.55 mi (1,726.10 km) |
| Olsberg to Kazanlak | 995.98 mi (1,602.88 km) |
| Olsberg to Knezha | 905.75 mi (1,457.66 km) |
| Olsberg to Kostinbrod | 907.04 mi (1,459.74 km) |
| Olsberg to Kozloduy | 879.64 mi (1,415.65 km) |
| Olsberg to Kyustendil | 915.35 mi (1,473.11 km) |
| Olsberg to Levski | 951.20 mi (1,530.81 km) |
| Olsberg to Lom | 859.34 mi (1,382.97 km) |
| Olsberg to Lovech | 946.30 mi (1,522.92 km) |
| Olsberg to Lukovit | 922.87 mi (1,485.22 km) |
| Olsberg to Lyaskovets | 985.43 mi (1,585.89 km) |
| Olsberg to Mezdra | 908.18 mi (1,461.57 km) |
| Olsberg to Momchilgrad | 1,049.14 mi (1,688.42 km) |
