| Crystal Lake to Smolyan | 5,302.08 mi (8,532.88 km) |
| Crystal Lake to Sofia | 5,197.89 mi (8,365.20 km) |
| Crystal Lake to Sopot | 5,251.32 mi (8,451.18 km) |
| Crystal Lake to Sozopol | 5,366.83 mi (8,637.07 km) |
| Crystal Lake to Sredets | 5,352.77 mi (8,614.46 km) |
| Crystal Lake to Stamboliyski | 5,268.97 mi (8,479.59 km) |
| Crystal Lake to Stara Zagora | 5,294.04 mi (8,519.93 km) |
| Crystal Lake to Svilengrad | 5,346.79 mi (8,604.82 km) |
| Crystal Lake to Svishtov | 5,224.89 mi (8,408.65 km) |
| Crystal Lake to Targovishte | 5,286.12 mi (8,507.19 km) |
| Crystal Lake to Teteven | 5,220.98 mi (8,402.35 km) |
| Crystal Lake to Troyan | 5,238.66 mi (8,430.80 km) |
| Crystal Lake to Tryavna | 5,267.23 mi (8,476.79 km) |
| Crystal Lake to Tutrakan | 5,247.34 mi (8,444.77 km) |
| Crystal Lake to Varna | 5,333.83 mi (8,583.97 km) |
