The calculated distance (air line) between Korsun-Shevchenkivskyy and Vatutine is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Vatutine is certainly longer, as only the direct route (as the crow flies) between Korsun-Shevchenkivskyy and Vatutine has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles