The calculated distance (air line) between Gamboula and Garoua Boulaï is approximately 129 miles respectively 207 kilometers.
By car or train, the actual journey to Garoua Boulaï is certainly longer, as only the direct route (as the crow flies) between Gamboula and Garoua Boulaï has been calculated here.
Air line (approximately)
207 kilometers
112 nautical miles