The calculated distance (air line) between Duayaw-Nkwanta and Obuase is approximately 73 miles respectively 118 kilometers.
By car or train, the actual journey to Obuase is certainly longer, as only the direct route (as the crow flies) between Duayaw-Nkwanta and Obuase has been calculated here.
Air line (approximately)
118 kilometers
64 nautical miles