The calculated distance (air line) between Zvëzdnyy and Yekaterinburg is approximately 172 miles respectively 276 kilometers.
By car or train, the actual journey to Yekaterinburg is certainly longer, as only the direct route (as the crow flies) between Zvëzdnyy and Yekaterinburg has been calculated here.
Air line (approximately)
276 kilometers
149 nautical miles