| Mission to Smolyan | 6,506.44 mi (10,471.11 km) |
| Mission to Sofia | 6,402.95 mi (10,304.55 km) |
| Mission to Sopot | 6,459.94 mi (10,396.27 km) |
| Mission to Sozopol | 6,582.07 mi (10,592.82 km) |
| Mission to Sredets | 6,566.56 mi (10,567.86 km) |
| Mission to Stamboliyski | 6,475.04 mi (10,420.57 km) |
| Mission to Stara Zagora | 6,504.19 mi (10,467.49 km) |
| Mission to Svilengrad | 6,555.95 mi (10,550.78 km) |
| Mission to Svishtov | 6,438.51 mi (10,361.78 km) |
| Mission to Targovishte | 6,501.43 mi (10,463.04 km) |
| Mission to Teteven | 6,429.35 mi (10,347.04 km) |
| Mission to Troyan | 6,448.07 mi (10,377.16 km) |
| Mission to Tryavna | 6,478.57 mi (10,426.25 km) |
| Mission to Tutrakan | 6,465.32 mi (10,404.93 km) |
| Mission to Varna | 6,552.13 mi (10,544.64 km) |
