The calculated distance (air line) between Homa Bay and Ongata Rongai is approximately 170 miles respectively 274 kilometers.
By car or train, the actual journey to Ongata Rongai is certainly longer, as only the direct route (as the crow flies) between Homa Bay and Ongata Rongai has been calculated here.
Air line (approximately)
274 kilometers
148 nautical miles