| Santona to Smolyan | 1,432.96 mi (2,306.12 km) |
| Santona to Sofia | 1,347.20 mi (2,168.10 km) |
| Santona to Sopot | 1,418.54 mi (2,282.93 km) |
| Santona to Sozopol | 1,568.64 mi (2,524.48 km) |
| Santona to Sredets | 1,544.86 mi (2,486.22 km) |
| Santona to Stamboliyski | 1,415.50 mi (2,278.02 km) |
| Santona to Stara Zagora | 1,466.50 mi (2,360.10 km) |
| Santona to Svilengrad | 1,504.71 mi (2,421.60 km) |
| Santona to Svishtov | 1,435.85 mi (2,310.77 km) |
| Santona to Targovishte | 1,501.25 mi (2,416.02 km) |
| Santona to Teteven | 1,390.86 mi (2,238.38 km) |
| Santona to Troyan | 1,413.66 mi (2,275.06 km) |
| Santona to Tryavna | 1,452.76 mi (2,337.99 km) |
| Santona to Tutrakan | 1,493.35 mi (2,403.31 km) |
| Santona to Varna | 1,567.54 mi (2,522.71 km) |
