| Sonsbeck to Karlovo | 1,060.20 mi (1,706.23 km) |
| Sonsbeck to Karnobat | 1,144.17 mi (1,841.36 km) |
| Sonsbeck to Kavarna | 1,163.40 mi (1,872.31 km) |
| Sonsbeck to Kazanlak | 1,083.90 mi (1,744.37 km) |
| Sonsbeck to Knezha | 993.69 mi (1,599.20 km) |
| Sonsbeck to Kostinbrod | 992.85 mi (1,597.83 km) |
| Sonsbeck to Kozloduy | 967.69 mi (1,557.34 km) |
| Sonsbeck to Kyustendil | 999.42 mi (1,608.41 km) |
| Sonsbeck to Levski | 1,039.92 mi (1,673.59 km) |
| Sonsbeck to Lom | 946.94 mi (1,523.95 km) |
| Sonsbeck to Lovech | 1,034.31 mi (1,664.57 km) |
| Sonsbeck to Lukovit | 1,010.43 mi (1,626.13 km) |
| Sonsbeck to Lyaskovets | 1,074.28 mi (1,728.88 km) |
| Sonsbeck to Mezdra | 995.15 mi (1,601.54 km) |
| Sonsbeck to Momchilgrad | 1,135.50 mi (1,827.40 km) |
