| Aci Castello to Smolyan | 579.50 mi (932.61 km) |
| Aci Castello to Sofia | 559.24 mi (900.02 km) |
| Aci Castello to Sopot | 617.04 mi (993.03 km) |
| Aci Castello to Sozopol | 743.61 mi (1,196.73 km) |
| Aci Castello to Sredets | 718.33 mi (1,156.04 km) |
| Aci Castello to Stamboliyski | 589.41 mi (948.56 km) |
| Aci Castello to Stara Zagora | 649.46 mi (1,045.20 km) |
| Aci Castello to Svilengrad | 655.33 mi (1,054.65 km) |
| Aci Castello to Svishtov | 678.88 mi (1,092.56 km) |
| Aci Castello to Targovishte | 717.98 mi (1,155.47 km) |
| Aci Castello to Teteven | 606.56 mi (976.16 km) |
| Aci Castello to Troyan | 624.22 mi (1,004.58 km) |
| Aci Castello to Tryavna | 657.37 mi (1,057.94 km) |
| Aci Castello to Tutrakan | 748.01 mi (1,203.80 km) |
| Aci Castello to Varna | 776.38 mi (1,249.47 km) |
