| Schwalmstadt to Smolyan | 978.52 mi (1,574.78 km) |
| Schwalmstadt to Sofia | 874.27 mi (1,407.00 km) |
| Schwalmstadt to Sopot | 928.22 mi (1,493.82 km) |
| Schwalmstadt to Sozopol | 1,050.88 mi (1,691.23 km) |
| Schwalmstadt to Sredets | 1,034.56 mi (1,664.97 km) |
| Schwalmstadt to Stamboliyski | 945.26 mi (1,521.25 km) |
| Schwalmstadt to Stara Zagora | 971.90 mi (1,564.12 km) |
| Schwalmstadt to Svilengrad | 1,024.03 mi (1,648.02 km) |
| Schwalmstadt to Svishtov | 906.64 mi (1,459.10 km) |
| Schwalmstadt to Targovishte | 970.56 mi (1,561.96 km) |
| Schwalmstadt to Teteven | 897.75 mi (1,444.78 km) |
| Schwalmstadt to Troyan | 915.97 mi (1,474.12 km) |
| Schwalmstadt to Tryavna | 946.11 mi (1,522.61 km) |
| Schwalmstadt to Tutrakan | 937.92 mi (1,509.43 km) |
| Schwalmstadt to Varna | 1,024.51 mi (1,648.79 km) |
