The calculated distance (air line) between Nyahururu and Ongata Rongai is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Ongata Rongai is certainly longer, as only the direct route (as the crow flies) between Nyahururu and Ongata Rongai has been calculated here.
Air line (approximately)
166 kilometers
89 nautical miles