The calculated distance (air line) between Piatra Olt and Reşiţa is approximately 133 miles respectively 214 kilometers.
By car or train, the actual journey to Reşiţa is certainly longer, as only the direct route (as the crow flies) between Piatra Olt and Reşiţa has been calculated here.
Air line (approximately)
214 kilometers
116 nautical miles