| Castelvetrano to Smolyan | 687.73 mi (1,106.80 km) |
| Castelvetrano to Sofia | 654.56 mi (1,053.41 km) |
| Castelvetrano to Sopot | 717.59 mi (1,154.85 km) |
| Castelvetrano to Sozopol | 852.06 mi (1,371.26 km) |
| Castelvetrano to Sredets | 826.36 mi (1,329.90 km) |
| Castelvetrano to Stamboliyski | 693.21 mi (1,115.61 km) |
| Castelvetrano to Stara Zagora | 753.90 mi (1,213.28 km) |
| Castelvetrano to Svilengrad | 765.24 mi (1,231.53 km) |
| Castelvetrano to Svishtov | 774.19 mi (1,245.94 km) |
| Castelvetrano to Targovishte | 819.15 mi (1,318.29 km) |
| Castelvetrano to Teteven | 703.55 mi (1,132.25 km) |
| Castelvetrano to Troyan | 722.92 mi (1,163.42 km) |
| Castelvetrano to Tryavna | 758.43 mi (1,220.58 km) |
| Castelvetrano to Tutrakan | 844.03 mi (1,358.33 km) |
| Castelvetrano to Varna | 880.54 mi (1,417.09 km) |
