| Alliance to Smolyan | 5,092.63 mi (8,195.80 km) |
| Alliance to Sofia | 4,989.21 mi (8,029.36 km) |
| Alliance to Sopot | 5,046.57 mi (8,121.67 km) |
| Alliance to Sozopol | 5,169.96 mi (8,320.25 km) |
| Alliance to Sredets | 5,154.09 mi (8,294.71 km) |
| Alliance to Stamboliyski | 5,061.37 mi (8,145.49 km) |
| Alliance to Stara Zagora | 5,091.03 mi (8,193.23 km) |
| Alliance to Svilengrad | 5,142.61 mi (8,276.23 km) |
| Alliance to Svishtov | 5,026.09 mi (8,088.71 km) |
| Alliance to Targovishte | 5,089.41 mi (8,190.61 km) |
| Alliance to Teteven | 5,015.96 mi (8,072.41 km) |
| Alliance to Troyan | 5,034.81 mi (8,102.75 km) |
| Alliance to Tryavna | 5,065.63 mi (8,152.35 km) |
| Alliance to Tutrakan | 5,054.17 mi (8,133.91 km) |
| Alliance to Varna | 5,141.01 mi (8,273.66 km) |
