| Alacuas to Smolyan | 1,325.01 mi (2,132.39 km) |
| Alacuas to Sofia | 1,254.92 mi (2,019.60 km) |
| Alacuas to Sopot | 1,326.93 mi (2,135.48 km) |
| Alacuas to Sozopol | 1,477.19 mi (2,377.32 km) |
| Alacuas to Sredets | 1,451.81 mi (2,336.46 km) |
| Alacuas to Stamboliyski | 1,315.65 mi (2,117.34 km) |
| Alacuas to Stara Zagora | 1,372.64 mi (2,209.05 km) |
| Alacuas to Svilengrad | 1,401.87 mi (2,256.10 km) |
| Alacuas to Svishtov | 1,359.68 mi (2,188.20 km) |
| Alacuas to Targovishte | 1,420.49 mi (2,286.05 km) |
| Alacuas to Teteven | 1,302.94 mi (2,096.87 km) |
| Alacuas to Troyan | 1,325.62 mi (2,133.38 km) |
| Alacuas to Tryavna | 1,365.24 mi (2,197.15 km) |
| Alacuas to Tutrakan | 1,424.47 mi (2,292.47 km) |
| Alacuas to Varna | 1,487.57 mi (2,394.01 km) |
