The calculated distance (air line) between Petaquillas and Acapulco de Juárez is approximately 53 miles respectively 86 kilometers.
By car or train, the actual journey to Acapulco de Juárez is certainly longer, as only the direct route (as the crow flies) between Petaquillas and Acapulco de Juárez has been calculated here.
Air line (approximately)
86 kilometers
46 nautical miles