| Castellana Grotte to Smolyan | 394.28 mi (634.53 km) |
| Castellana Grotte to Sofia | 341.30 mi (549.28 km) |
| Castellana Grotte to Sopot | 409.25 mi (658.62 km) |
| Castellana Grotte to Sozopol | 553.65 mi (891.01 km) |
| Castellana Grotte to Sredets | 527.75 mi (849.33 km) |
| Castellana Grotte to Stamboliyski | 390.68 mi (628.74 km) |
| Castellana Grotte to Stara Zagora | 450.61 mi (725.18 km) |
| Castellana Grotte to Svilengrad | 472.45 mi (760.33 km) |
| Castellana Grotte to Svishtov | 458.89 mi (738.52 km) |
| Castellana Grotte to Targovishte | 509.59 mi (820.10 km) |
| Castellana Grotte to Teteven | 391.07 mi (629.37 km) |
| Castellana Grotte to Troyan | 412.04 mi (663.12 km) |
| Castellana Grotte to Tryavna | 449.87 mi (723.99 km) |
| Castellana Grotte to Tutrakan | 528.59 mi (850.69 km) |
| Castellana Grotte to Varna | 574.15 mi (924.00 km) |
