| Astorga to Smolyan | 1,571.55 mi (2,529.16 km) |
| Astorga to Sofia | 1,487.90 mi (2,394.55 km) |
| Astorga to Sopot | 1,559.58 mi (2,509.90 km) |
| Astorga to Sozopol | 1,710.11 mi (2,752.16 km) |
| Astorga to Sredets | 1,686.05 mi (2,713.43 km) |
| Astorga to Stamboliyski | 1,555.31 mi (2,503.04 km) |
| Astorga to Stara Zagora | 1,607.35 mi (2,586.79 km) |
| Astorga to Svilengrad | 1,644.34 mi (2,646.31 km) |
| Astorga to Svishtov | 1,578.93 mi (2,541.04 km) |
| Astorga to Targovishte | 1,643.94 mi (2,645.67 km) |
| Astorga to Teteven | 1,532.32 mi (2,466.03 km) |
| Astorga to Troyan | 1,555.17 mi (2,502.80 km) |
| Astorga to Tryavna | 1,594.46 mi (2,566.03 km) |
| Astorga to Tutrakan | 1,637.39 mi (2,635.13 km) |
| Astorga to Varna | 1,710.48 mi (2,752.76 km) |
