The calculated distance (air line) between Petrove and Kryvyy Rih is approximately 30 miles respectively 49 kilometers.
By car or train, the actual journey to Kryvyy Rih is certainly longer, as only the direct route (as the crow flies) between Petrove and Kryvyy Rih has been calculated here.
Air line (approximately)
49 kilometers
26 nautical miles