The calculated distance (air line) between Korsun-Shevchenkivskyy and Cherkasy is approximately 36 miles respectively 58 kilometers.
By car or train, the actual journey to Cherkasy is certainly longer, as only the direct route (as the crow flies) between Korsun-Shevchenkivskyy and Cherkasy has been calculated here.
Air line (approximately)
58 kilometers
31 nautical miles