The calculated distance (air line) between Leverkusen and Humboldtkolonie is approximately 7 miles respectively 11 kilometers.
By car or train, the actual journey to Humboldtkolonie is certainly longer, as only the direct route (as the crow flies) between Leverkusen and Humboldtkolonie has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles