| Cities | Distance |
|---|
| Istrana to Popovo | 713.69 mi (1,148.57 km) |
| Istrana to Provadia | 774.66 mi (1,246.70 km) |
| Istrana to Radnevo | 725.16 mi (1,167.03 km) |
| Istrana to Radomir | 579.51 mi (932.63 km) |
| Istrana to Rakitovo | 648.83 mi (1,044.19 km) |
| Istrana to Rakovski | 680.30 mi (1,094.84 km) |
| Istrana to Razgrad | 723.47 mi (1,164.32 km) |
| Istrana to Razlog | 624.08 mi (1,004.36 km) |
| Istrana to Ruse | 690.88 mi (1,111.86 km) |
| Istrana to Samokov | 613.70 mi (987.66 km) |
| Istrana to Sandanski | 626.62 mi (1,008.45 km) |
| Istrana to Sevlievo | 667.75 mi (1,074.64 km) |
| Istrana to Shumen | 748.59 mi (1,204.74 km) |
| Istrana to Silistra | 748.67 mi (1,204.86 km) |
| Istrana to Sliven | 733.91 mi (1,181.12 km) |
