| Centennial to Smolyan | 5,997.22 mi (9,651.60 km) |
| Centennial to Sofia | 5,893.37 mi (9,484.47 km) |
| Centennial to Sopot | 5,939.51 mi (9,558.72 km) |
| Centennial to Sozopol | 6,039.99 mi (9,720.42 km) |
| Centennial to Sredets | 6,029.22 mi (9,703.09 km) |
| Centennial to Stamboliyski | 5,961.59 mi (9,594.26 km) |
| Centennial to Stara Zagora | 5,978.67 mi (9,621.74 km) |
| Centennial to Svilengrad | 6,032.52 mi (9,708.40 km) |
| Centennial to Svishtov | 5,903.65 mi (9,501.00 km) |
| Centennial to Targovishte | 5,960.38 mi (9,592.30 km) |
| Centennial to Teteven | 5,910.10 mi (9,511.38 km) |
| Centennial to Troyan | 5,925.56 mi (9,536.26 km) |
| Centennial to Tryavna | 5,949.95 mi (9,575.52 km) |
| Centennial to Tutrakan | 5,916.27 mi (9,521.32 km) |
| Centennial to Varna | 6,000.70 mi (9,657.19 km) |
