| Hercules to Smolyan | 6,556.76 mi (10,552.09 km) |
| Hercules to Sofia | 6,456.64 mi (10,390.95 km) |
| Hercules to Sopot | 6,491.35 mi (10,446.81 km) |
| Hercules to Sozopol | 6,568.08 mi (10,570.30 km) |
| Hercules to Sredets | 6,562.12 mi (10,560.71 km) |
| Hercules to Stamboliyski | 6,518.78 mi (10,490.97 km) |
| Hercules to Stara Zagora | 6,524.37 mi (10,499.96 km) |
| Hercules to Svilengrad | 6,577.99 mi (10,586.25 km) |
| Hercules to Svishtov | 6,443.83 mi (10,370.35 km) |
| Hercules to Targovishte | 6,492.60 mi (10,448.84 km) |
| Hercules to Teteven | 6,464.13 mi (10,403.01 km) |
| Hercules to Troyan | 6,476.07 mi (10,422.23 km) |
| Hercules to Tryavna | 6,493.99 mi (10,451.06 km) |
| Hercules to Tutrakan | 6,442.83 mi (10,368.73 km) |
| Hercules to Varna | 6,521.62 mi (10,495.53 km) |
