| Piedras Blancas to Smolyan | 1,557.94 mi (2,507.27 km) |
| Piedras Blancas to Sofia | 1,471.27 mi (2,367.78 km) |
| Piedras Blancas to Sopot | 1,542.41 mi (2,482.27 km) |
| Piedras Blancas to Sozopol | 1,692.19 mi (2,723.32 km) |
| Piedras Blancas to Sredets | 1,668.59 mi (2,685.34 km) |
| Piedras Blancas to Stamboliyski | 1,539.98 mi (2,478.36 km) |
| Piedras Blancas to Stara Zagora | 1,590.44 mi (2,559.57 km) |
| Piedras Blancas to Svilengrad | 1,629.25 mi (2,622.02 km) |
| Piedras Blancas to Svishtov | 1,558.31 mi (2,507.85 km) |
| Piedras Blancas to Targovishte | 1,623.98 mi (2,613.54 km) |
| Piedras Blancas to Teteven | 1,514.49 mi (2,437.34 km) |
| Piedras Blancas to Troyan | 1,537.24 mi (2,473.95 km) |
| Piedras Blancas to Tryavna | 1,576.21 mi (2,536.67 km) |
| Piedras Blancas to Tutrakan | 1,614.90 mi (2,598.93 km) |
| Piedras Blancas to Varna | 1,690.04 mi (2,719.86 km) |
