| Middle Valley to Smolyan | 5,524.32 mi (8,890.54 km) |
| Middle Valley to Sofia | 5,421.45 mi (8,724.98 km) |
| Middle Valley to Sopot | 5,480.30 mi (8,819.70 km) |
| Middle Valley to Sozopol | 5,606.49 mi (9,022.78 km) |
| Middle Valley to Sredets | 5,589.98 mi (8,996.21 km) |
| Middle Valley to Stamboliyski | 5,493.90 mi (8,841.58 km) |
| Middle Valley to Stara Zagora | 5,525.37 mi (8,892.23 km) |
| Middle Valley to Svilengrad | 5,576.38 mi (8,974.32 km) |
| Middle Valley to Svishtov | 5,462.18 mi (8,790.52 km) |
| Middle Valley to Targovishte | 5,526.15 mi (8,893.47 km) |
| Middle Valley to Teteven | 5,449.65 mi (8,770.37 km) |
| Middle Valley to Troyan | 5,468.94 mi (8,801.40 km) |
| Middle Valley to Tryavna | 5,500.58 mi (8,852.32 km) |
| Middle Valley to Tutrakan | 5,492.25 mi (8,838.91 km) |
| Middle Valley to Varna | 5,579.05 mi (8,978.61 km) |
