| Zachary to Smolyan | 5,989.35 mi (9,638.92 km) |
| Zachary to Sofia | 5,886.33 mi (9,473.13 km) |
| Zachary to Sopot | 5,944.79 mi (9,567.22 km) |
| Zachary to Sozopol | 6,070.04 mi (9,768.79 km) |
| Zachary to Sredets | 6,053.78 mi (9,742.61 km) |
| Zachary to Stamboliyski | 5,958.72 mi (9,589.63 km) |
| Zachary to Stara Zagora | 5,989.69 mi (9,639.47 km) |
| Zachary to Svilengrad | 6,040.87 mi (9,721.84 km) |
| Zachary to Svishtov | 5,925.88 mi (9,536.78 km) |
| Zachary to Targovishte | 5,989.60 mi (9,639.34 km) |
| Zachary to Teteven | 5,914.15 mi (9,517.90 km) |
| Zachary to Troyan | 5,933.31 mi (9,548.74 km) |
| Zachary to Tryavna | 5,964.69 mi (9,599.24 km) |
| Zachary to Tutrakan | 5,955.12 mi (9,583.85 km) |
| Zachary to Varna | 6,041.95 mi (9,723.59 km) |
