| Guidel to Smolyan | 1,440.37 mi (2,318.05 km) |
| Guidel to Sofia | 1,343.68 mi (2,162.44 km) |
| Guidel to Sopot | 1,410.81 mi (2,270.47 km) |
| Guidel to Sozopol | 1,554.21 mi (2,501.25 km) |
| Guidel to Sredets | 1,532.94 mi (2,467.03 km) |
| Guidel to Stamboliyski | 1,415.86 mi (2,278.61 km) |
| Guidel to Stara Zagora | 1,458.70 mi (2,347.55 km) |
| Guidel to Svilengrad | 1,503.96 mi (2,420.40 km) |
| Guidel to Svishtov | 1,412.41 mi (2,273.05 km) |
| Guidel to Targovishte | 1,479.27 mi (2,380.66 km) |
| Guidel to Teteven | 1,380.92 mi (2,222.37 km) |
| Guidel to Troyan | 1,402.69 mi (2,257.42 km) |
| Guidel to Tryavna | 1,439.45 mi (2,316.58 km) |
| Guidel to Tutrakan | 1,460.30 mi (2,350.13 km) |
| Guidel to Varna | 1,542.05 mi (2,481.70 km) |
