| Cascades to Smolyan | 5,026.89 mi (8,090.00 km) |
| Cascades to Sofia | 4,924.46 mi (7,925.16 km) |
| Cascades to Sopot | 4,984.36 mi (8,021.56 km) |
| Cascades to Sozopol | 5,112.76 mi (8,228.20 km) |
| Cascades to Sredets | 5,095.70 mi (8,200.73 km) |
| Cascades to Stamboliyski | 4,997.07 mi (8,042.01 km) |
| Cascades to Stara Zagora | 5,029.86 mi (8,094.79 km) |
| Cascades to Svilengrad | 5,080.39 mi (8,176.10 km) |
| Cascades to Svishtov | 4,968.17 mi (7,995.50 km) |
| Cascades to Targovishte | 5,032.67 mi (8,099.30 km) |
| Cascades to Teteven | 4,953.70 mi (7,972.21 km) |
| Cascades to Troyan | 4,973.30 mi (8,003.76 km) |
| Cascades to Tryavna | 5,005.57 mi (8,055.69 km) |
| Cascades to Tutrakan | 5,000.08 mi (8,046.86 km) |
| Cascades to Varna | 5,086.78 mi (8,186.37 km) |
