| Streator to Smolyan | 5,374.44 mi (8,649.32 km) |
| Streator to Sofia | 5,270.29 mi (8,481.72 km) |
| Streator to Sopot | 5,324.17 mi (8,568.42 km) |
| Streator to Sozopol | 5,440.52 mi (8,755.68 km) |
| Streator to Sredets | 5,426.29 mi (8,732.76 km) |
| Streator to Stamboliyski | 5,341.52 mi (8,596.35 km) |
| Streator to Stara Zagora | 5,367.09 mi (8,637.49 km) |
| Streator to Svilengrad | 5,419.73 mi (8,722.21 km) |
| Streator to Svishtov | 5,298.35 mi (8,526.86 km) |
| Streator to Targovishte | 5,359.81 mi (8,625.78 km) |
| Streator to Teteven | 5,293.79 mi (8,519.53 km) |
| Streator to Troyan | 5,311.60 mi (8,548.19 km) |
| Streator to Tryavna | 5,340.41 mi (8,594.57 km) |
| Streator to Tutrakan | 5,321.36 mi (8,563.90 km) |
| Streator to Varna | 5,407.91 mi (8,703.19 km) |
