| Bad Harzburg to Smolyan | 973.65 mi (1,566.95 km) |
| Bad Harzburg to Sofia | 869.58 mi (1,399.45 km) |
| Bad Harzburg to Sopot | 918.57 mi (1,478.29 km) |
| Bad Harzburg to Sozopol | 1,032.91 mi (1,662.32 km) |
| Bad Harzburg to Sredets | 1,018.34 mi (1,638.87 km) |
| Bad Harzburg to Stamboliyski | 938.67 mi (1,510.64 km) |
| Bad Harzburg to Stara Zagora | 960.17 mi (1,545.25 km) |
| Bad Harzburg to Svilengrad | 1,013.35 mi (1,630.82 km) |
| Bad Harzburg to Svishtov | 890.39 mi (1,432.94 km) |
| Bad Harzburg to Targovishte | 952.20 mi (1,532.42 km) |
| Bad Harzburg to Teteven | 888.57 mi (1,430.02 km) |
| Bad Harzburg to Troyan | 905.37 mi (1,457.05 km) |
| Bad Harzburg to Tryavna | 932.93 mi (1,501.40 km) |
| Bad Harzburg to Tutrakan | 915.64 mi (1,473.58 km) |
| Bad Harzburg to Varna | 1,002.47 mi (1,613.32 km) |
