The calculated distance (air line) between Sekondi-Takoradi and Sunyani is approximately 171 miles respectively 276 kilometers.
By car or train, the actual journey to Sunyani is certainly longer, as only the direct route (as the crow flies) between Sekondi-Takoradi and Sunyani has been calculated here.
Air line (approximately)
276 kilometers
149 nautical miles