The calculated distance (air line) between Ust’-Katav and Yekaterinburg is approximately 163 miles respectively 262 kilometers.
By car or train, the actual journey to Yekaterinburg is certainly longer, as only the direct route (as the crow flies) between Ust’-Katav and Yekaterinburg has been calculated here.
Air line (approximately)
262 kilometers
141 nautical miles