The calculated distance (air line) between Korsun-Shevchenkivskyy and Rzhyshchiv is approximately 39 miles respectively 63 kilometers.
By car or train, the actual journey to Rzhyshchiv is certainly longer, as only the direct route (as the crow flies) between Korsun-Shevchenkivskyy and Rzhyshchiv has been calculated here.
Air line (approximately)
63 kilometers
34 nautical miles