The calculated distance (air line) between Duayaw-Nkwanta and Atsiaman is approximately 159 miles respectively 256 kilometers.
By car or train, the actual journey to Atsiaman is certainly longer, as only the direct route (as the crow flies) between Duayaw-Nkwanta and Atsiaman has been calculated here.
Air line (approximately)
256 kilometers
138 nautical miles