| Heidenheim to Smolyan | 859.62 mi (1,383.43 km) |
| Heidenheim to Sofia | 756.62 mi (1,217.66 km) |
| Heidenheim to Sopot | 816.58 mi (1,314.17 km) |
| Heidenheim to Sozopol | 949.74 mi (1,528.46 km) |
| Heidenheim to Sredets | 931.00 mi (1,498.29 km) |
| Heidenheim to Stamboliyski | 829.12 mi (1,334.34 km) |
| Heidenheim to Stara Zagora | 862.58 mi (1,388.19 km) |
| Heidenheim to Svilengrad | 912.52 mi (1,468.56 km) |
| Heidenheim to Svishtov | 805.13 mi (1,295.73 km) |
| Heidenheim to Targovishte | 871.20 mi (1,402.06 km) |
| Heidenheim to Teteven | 785.93 mi (1,264.84 km) |
| Heidenheim to Troyan | 805.91 mi (1,296.98 km) |
| Heidenheim to Tryavna | 839.30 mi (1,350.73 km) |
| Heidenheim to Tutrakan | 845.35 mi (1,360.46 km) |
| Heidenheim to Varna | 930.14 mi (1,496.91 km) |
