The calculated distance (air line) between Smyshlyayevka and Chapayevsk is approximately 34 miles respectively 54 kilometers.
By car or train, the actual journey to Chapayevsk is certainly longer, as only the direct route (as the crow flies) between Smyshlyayevka and Chapayevsk has been calculated here.
Air line (approximately)
54 kilometers
29 nautical miles