| Horb am Neckar to Smolyan | 911.76 mi (1,467.33 km) |
| Horb am Neckar to Sofia | 809.78 mi (1,303.22 km) |
| Horb am Neckar to Sopot | 871.78 mi (1,402.99 km) |
| Horb am Neckar to Sozopol | 1,007.89 mi (1,622.04 km) |
| Horb am Neckar to Sredets | 988.46 mi (1,590.78 km) |
| Horb am Neckar to Stamboliyski | 882.53 mi (1,420.30 km) |
| Horb am Neckar to Stara Zagora | 918.40 mi (1,478.03 km) |
| Horb am Neckar to Svilengrad | 967.36 mi (1,556.82 km) |
| Horb am Neckar to Svishtov | 863.69 mi (1,389.97 km) |
| Horb am Neckar to Targovishte | 930.13 mi (1,496.90 km) |
| Horb am Neckar to Teteven | 841.20 mi (1,353.78 km) |
| Horb am Neckar to Troyan | 861.70 mi (1,386.78 km) |
| Horb am Neckar to Tryavna | 896.07 mi (1,442.08 km) |
| Horb am Neckar to Tutrakan | 906.18 mi (1,458.35 km) |
| Horb am Neckar to Varna | 990.23 mi (1,593.62 km) |
