| The Hills to Smolyan | 4,842.91 mi (7,793.91 km) |
| The Hills to Sofia | 4,740.52 mi (7,629.13 km) |
| The Hills to Sopot | 4,800.51 mi (7,725.68 km) |
| The Hills to Sozopol | 4,929.15 mi (7,932.70 km) |
| The Hills to Sredets | 4,912.02 mi (7,905.13 km) |
| The Hills to Stamboliyski | 4,813.14 mi (7,746.01 km) |
| The Hills to Stara Zagora | 4,846.06 mi (7,798.97 km) |
| The Hills to Svilengrad | 4,896.53 mi (7,880.20 km) |
| The Hills to Svishtov | 4,784.53 mi (7,699.96 km) |
| The Hills to Targovishte | 4,849.10 mi (7,803.87 km) |
| The Hills to Teteven | 4,769.85 mi (7,676.33 km) |
| The Hills to Troyan | 4,789.48 mi (7,707.93 km) |
| The Hills to Tryavna | 4,821.81 mi (7,759.96 km) |
| The Hills to Tutrakan | 4,816.68 mi (7,751.70 km) |
| The Hills to Varna | 4,903.35 mi (7,891.19 km) |
