The calculated distance (air line) between Duayaw-Nkwanta and Ashaiman is approximately 175 miles respectively 281 kilometers.
By car or train, the actual journey to Ashaiman is certainly longer, as only the direct route (as the crow flies) between Duayaw-Nkwanta and Ashaiman has been calculated here.
Air line (approximately)
281 kilometers
152 nautical miles