| Defiance to Smolyan | 5,200.61 mi (8,369.58 km) |
| Defiance to Sofia | 5,096.78 mi (8,202.47 km) |
| Defiance to Sopot | 5,152.56 mi (8,292.24 km) |
| Defiance to Sozopol | 5,272.79 mi (8,485.73 km) |
| Defiance to Sredets | 5,257.66 mi (8,461.39 km) |
| Defiance to Stamboliyski | 5,168.56 mi (8,317.99 km) |
| Defiance to Stara Zagora | 5,196.34 mi (8,362.70 km) |
| Defiance to Svilengrad | 5,248.45 mi (8,446.56 km) |
| Defiance to Svishtov | 5,129.59 mi (8,255.28 km) |
| Defiance to Targovishte | 5,192.10 mi (8,355.87 km) |
| Defiance to Teteven | 5,122.04 mi (8,243.12 km) |
| Defiance to Troyan | 5,140.42 mi (8,272.71 km) |
| Defiance to Tryavna | 5,170.33 mi (8,320.85 km) |
| Defiance to Tutrakan | 5,155.35 mi (8,296.74 km) |
| Defiance to Varna | 5,242.12 mi (8,436.38 km) |
