The calculated distance (air line) between Efon-Alaaye and Nkpor is approximately 167 miles respectively 269 kilometers.
By car or train, the actual journey to Nkpor is certainly longer, as only the direct route (as the crow flies) between Efon-Alaaye and Nkpor has been calculated here.
Air line (approximately)
269 kilometers
145 nautical miles