The calculated distance (air line) between Muhoroni and Ongata Rongai is approximately 138 miles respectively 222 kilometers.
By car or train, the actual journey to Ongata Rongai is certainly longer, as only the direct route (as the crow flies) between Muhoroni and Ongata Rongai has been calculated here.
Air line (approximately)
222 kilometers
120 nautical miles