| Schwelm to Smolyan | 1,061.66 mi (1,708.58 km) |
| Schwelm to Sofia | 957.54 mi (1,541.01 km) |
| Schwelm to Sopot | 1,012.77 mi (1,629.90 km) |
| Schwelm to Sozopol | 1,137.11 mi (1,830.00 km) |
| Schwelm to Sredets | 1,120.48 mi (1,803.24 km) |
| Schwelm to Stamboliyski | 1,028.96 mi (1,655.95 km) |
| Schwelm to Stara Zagora | 1,056.90 mi (1,700.92 km) |
| Schwelm to Svilengrad | 1,108.72 mi (1,784.31 km) |
| Schwelm to Svishtov | 992.68 mi (1,597.57 km) |
| Schwelm to Targovishte | 1,056.91 mi (1,700.94 km) |
| Schwelm to Teteven | 982.22 mi (1,580.74 km) |
| Schwelm to Troyan | 1,000.78 mi (1,610.61 km) |
| Schwelm to Tryavna | 1,031.48 mi (1,660.00 km) |
| Schwelm to Tutrakan | 1,024.88 mi (1,649.38 km) |
| Schwelm to Varna | 1,111.39 mi (1,788.61 km) |
