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