| Guichen to Smolyan | 1,364.32 mi (2,195.66 km) |
| Guichen to Sofia | 1,267.00 mi (2,039.04 km) |
| Guichen to Sopot | 1,333.71 mi (2,146.41 km) |
| Guichen to Sozopol | 1,476.50 mi (2,376.20 km) |
| Guichen to Sredets | 1,455.41 mi (2,342.26 km) |
| Guichen to Stamboliyski | 1,339.32 mi (2,155.43 km) |
| Guichen to Stara Zagora | 1,381.53 mi (2,223.36 km) |
| Guichen to Svilengrad | 1,427.20 mi (2,296.85 km) |
| Guichen to Svishtov | 1,334.39 mi (2,147.49 km) |
| Guichen to Targovishte | 1,401.25 mi (2,255.09 km) |
| Guichen to Teteven | 1,303.73 mi (2,098.15 km) |
| Guichen to Troyan | 1,325.41 mi (2,133.04 km) |
| Guichen to Tryavna | 1,361.97 mi (2,191.87 km) |
| Guichen to Tutrakan | 1,381.78 mi (2,223.76 km) |
| Guichen to Varna | 1,463.79 mi (2,355.75 km) |
