| Cities | Distance |
|---|---|
| Duzce to Smolyan | 339.49 mi (546.35 km) |
| Duzce to Sofia | 423.15 mi (680.99 km) |
| Duzce to Sopot | 353.08 mi (568.22 km) |
| Duzce to Sozopol | 209.12 mi (336.54 km) |
| Duzce to Sredets | 229.52 mi (369.37 km) |
| Duzce to Stamboliyski | 354.21 mi (570.05 km) |
| Duzce to Stara Zagora | 304.88 mi (490.66 km) |
| Duzce to Svilengrad | 265.13 mi (426.68 km) |
| Duzce to Svishtov | 353.51 mi (568.92 km) |
| Duzce to Targovishte | 287.66 mi (462.95 km) |
| Duzce to Teteven | 382.27 mi (615.21 km) |
| Duzce to Troyan | 360.11 mi (579.54 km) |
| Duzce to Tryavna | 322.98 mi (519.78 km) |
| Duzce to Tutrakan | 320.46 mi (515.73 km) |
| Duzce to Varna | 233.64 mi (376.01 km) |