The calculated distance (air line) between Yekaterinburg and Chelyabinsk is approximately 121 miles respectively 196 kilometers.
By car or train, the actual journey to Chelyabinsk is certainly longer, as only the direct route (as the crow flies) between Yekaterinburg and Chelyabinsk has been calculated here.
Air line (approximately)
196 kilometers
105 nautical miles