The calculated distance (air line) between Karatina and Ongata Rongai is approximately 68 miles respectively 109 kilometers.
By car or train, the actual journey to Ongata Rongai is certainly longer, as only the direct route (as the crow flies) between Karatina and Ongata Rongai has been calculated here.
Air line (approximately)
109 kilometers
59 nautical miles