| Cities | Distance |
|---|
| Istrana to Smolyan | 689.84 mi (1,110.19 km) |
| Istrana to Sofia | 592.67 mi (953.81 km) |
| Istrana to Sopot | 660.20 mi (1,062.50 km) |
| Istrana to Sozopol | 805.40 mi (1,296.17 km) |
| Istrana to Sredets | 783.45 mi (1,260.83 km) |
| Istrana to Stamboliyski | 664.85 mi (1,069.97 km) |
| Istrana to Stara Zagora | 708.23 mi (1,139.79 km) |
| Istrana to Svilengrad | 752.97 mi (1,211.80 km) |
| Istrana to Svishtov | 665.92 mi (1,071.70 km) |
| Istrana to Targovishte | 732.57 mi (1,178.95 km) |
| Istrana to Teteven | 630.53 mi (1,014.75 km) |
| Istrana to Troyan | 652.55 mi (1,050.18 km) |
| Istrana to Tryavna | 689.92 mi (1,110.32 km) |
| Istrana to Tutrakan | 718.75 mi (1,156.72 km) |
| Istrana to Varna | 797.11 mi (1,282.82 km) |
