The calculated distance (air line) between Ocna Mureş and Ploieşti is approximately 144 miles respectively 232 kilometers.
By car or train, the actual journey to Ploieşti is certainly longer, as only the direct route (as the crow flies) between Ocna Mureş and Ploieşti has been calculated here.
Air line (approximately)
232 kilometers
125 nautical miles