| Castellammare di Stabia to Smolyan | 535.00 mi (860.99 km) |
| Castellammare di Stabia to Sofia | 476.85 mi (767.41 km) |
| Castellammare di Stabia to Sopot | 546.58 mi (879.63 km) |
| Castellammare di Stabia to Sozopol | 693.04 mi (1,115.33 km) |
| Castellammare di Stabia to Sredets | 667.19 mi (1,073.74 km) |
| Castellammare di Stabia to Stamboliyski | 529.98 mi (852.92 km) |
| Castellammare di Stabia to Stara Zagora | 589.33 mi (948.44 km) |
| Castellammare di Stabia to Svilengrad | 612.98 mi (986.50 km) |
| Castellammare di Stabia to Svishtov | 591.68 mi (952.21 km) |
| Castellammare di Stabia to Targovishte | 645.63 mi (1,039.04 km) |
| Castellammare di Stabia to Teteven | 526.53 mi (847.36 km) |
| Castellammare di Stabia to Troyan | 548.19 mi (882.23 km) |
| Castellammare di Stabia to Tryavna | 586.78 mi (944.33 km) |
| Castellammare di Stabia to Tutrakan | 660.67 mi (1,063.25 km) |
| Castellammare di Stabia to Varna | 711.17 mi (1,144.51 km) |
