| Castelldefels to Smolyan | 1,173.90 mi (1,889.21 km) |
| Castelldefels to Sofia | 1,098.02 mi (1,767.09 km) |
| Castelldefels to Sopot | 1,170.24 mi (1,883.31 km) |
| Castelldefels to Sozopol | 1,321.20 mi (2,126.27 km) |
| Castelldefels to Sredets | 1,296.22 mi (2,086.06 km) |
| Castelldefels to Stamboliyski | 1,161.63 mi (1,869.47 km) |
| Castelldefels to Stara Zagora | 1,216.92 mi (1,958.45 km) |
| Castelldefels to Svilengrad | 1,249.35 mi (2,010.64 km) |
| Castelldefels to Svishtov | 1,198.48 mi (1,928.77 km) |
| Castelldefels to Targovishte | 1,260.92 mi (2,029.26 km) |
| Castelldefels to Teteven | 1,144.94 mi (1,842.60 km) |
| Castelldefels to Troyan | 1,167.79 mi (1,879.37 km) |
| Castelldefels to Tryavna | 1,207.46 mi (1,943.22 km) |
| Castelldefels to Tutrakan | 1,261.56 mi (2,030.29 km) |
| Castelldefels to Varna | 1,328.08 mi (2,137.33 km) |
