| Crystal to Smolyan | 5,336.28 mi (8,587.90 km) |
| Crystal to Sofia | 5,232.04 mi (8,420.16 km) |
| Crystal to Sopot | 5,281.30 mi (8,499.43 km) |
| Crystal to Sozopol | 5,388.45 mi (8,671.88 km) |
| Crystal to Sredets | 5,376.23 mi (8,652.20 km) |
| Crystal to Stamboliyski | 5,301.60 mi (8,532.10 km) |
| Crystal to Stara Zagora | 5,322.05 mi (8,565.01 km) |
| Crystal to Svilengrad | 5,375.57 mi (8,651.14 km) |
| Crystal to Svishtov | 5,249.34 mi (8,448.00 km) |
| Crystal to Targovishte | 5,308.16 mi (8,542.66 km) |
| Crystal to Teteven | 5,251.43 mi (8,451.36 km) |
| Crystal to Troyan | 5,267.85 mi (8,477.79 km) |
| Crystal to Tryavna | 5,294.07 mi (8,519.98 km) |
| Crystal to Tutrakan | 5,266.26 mi (8,475.23 km) |
| Crystal to Varna | 5,351.83 mi (8,612.94 km) |
