The calculated distance (air line) between Kanzakimachi-kanzaki and Fukuoka is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to Fukuoka is certainly longer, as only the direct route (as the crow flies) between Kanzakimachi-kanzaki and Fukuoka has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles