The calculated distance (air line) between Rumuruti and Ongata Rongai is approximately 116 miles respectively 187 kilometers.
By car or train, the actual journey to Ongata Rongai is certainly longer, as only the direct route (as the crow flies) between Rumuruti and Ongata Rongai has been calculated here.
Air line (approximately)
187 kilometers
101 nautical miles