| Barreiro to Smolyan | 1,783.83 mi (2,870.80 km) |
| Barreiro to Sofia | 1,709.39 mi (2,751.00 km) |
| Barreiro to Sopot | 1,781.60 mi (2,867.21 km) |
| Barreiro to Sozopol | 1,932.52 mi (3,110.09 km) |
| Barreiro to Sredets | 1,907.47 mi (3,069.78 km) |
| Barreiro to Stamboliyski | 1,772.50 mi (2,852.56 km) |
| Barreiro to Stara Zagora | 1,828.17 mi (2,942.15 km) |
| Barreiro to Svilengrad | 1,859.84 mi (2,993.12 km) |
| Barreiro to Svishtov | 1,809.70 mi (2,912.43 km) |
| Barreiro to Targovishte | 1,872.35 mi (3,013.25 km) |
| Barreiro to Teteven | 1,756.40 mi (2,826.66 km) |
| Barreiro to Troyan | 1,779.24 mi (2,863.42 km) |
| Barreiro to Tryavna | 1,818.92 mi (2,927.27 km) |
| Barreiro to Tutrakan | 1,872.29 mi (3,013.16 km) |
| Barreiro to Varna | 1,939.50 mi (3,121.32 km) |
