| Apt to Smolyan | 990.10 mi (1,593.41 km) |
| Apt to Sofia | 903.82 mi (1,454.55 km) |
| Apt to Sopot | 975.20 mi (1,569.44 km) |
| Apt to Sozopol | 1,125.42 mi (1,811.19 km) |
| Apt to Sredets | 1,101.56 mi (1,772.79 km) |
| Apt to Stamboliyski | 972.19 mi (1,564.60 km) |
| Apt to Stara Zagora | 1,023.14 mi (1,646.58 km) |
| Apt to Svilengrad | 1,061.44 mi (1,708.22 km) |
| Apt to Svishtov | 993.69 mi (1,599.19 km) |
| Apt to Targovishte | 1,058.72 mi (1,703.85 km) |
| Apt to Teteven | 947.62 mi (1,525.05 km) |
| Apt to Troyan | 970.43 mi (1,561.76 km) |
| Apt to Tryavna | 1,009.61 mi (1,624.81 km) |
| Apt to Tutrakan | 1,052.48 mi (1,693.80 km) |
| Apt to Varna | 1,125.24 mi (1,810.91 km) |
