The calculated distance (air line) between Sīdī Bin Zīnah and Misratah is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Misratah is certainly longer, as only the direct route (as the crow flies) between Sīdī Bin Zīnah and Misratah has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles