The calculated distance (air line) between Acapulco de Juárez and San Jeronimito is approximately 107 miles respectively 172 kilometers.
By car or train, the actual journey to San Jeronimito is certainly longer, as only the direct route (as the crow flies) between Acapulco de Juárez and San Jeronimito has been calculated here.
Air line (approximately)
172 kilometers
93 nautical miles