| Zonguldak to Smolyan | 367.23 mi (590.99 km) |
| Zonguldak to Sofia | 442.51 mi (712.15 km) |
| Zonguldak to Sopot | 370.78 mi (596.71 km) |
| Zonguldak to Sozopol | 220.83 mi (355.40 km) |
| Zonguldak to Sredets | 244.37 mi (393.28 km) |
| Zonguldak to Stamboliyski | 377.04 mi (606.79 km) |
| Zonguldak to Stara Zagora | 323.03 mi (519.87 km) |
| Zonguldak to Svilengrad | 289.96 mi (466.64 km) |
| Zonguldak to Svishtov | 360.51 mi (580.18 km) |
| Zonguldak to Targovishte | 293.65 mi (472.58 km) |
| Zonguldak to Teteven | 398.43 mi (641.20 km) |
| Zonguldak to Troyan | 375.69 mi (604.61 km) |
| Zonguldak to Tryavna | 336.89 mi (542.17 km) |
| Zonguldak to Tutrakan | 318.06 mi (511.88 km) |
| Zonguldak to Varna | 232.56 mi (374.27 km) |
