The calculated distance (air line) between Sīdī aş Şayd and Zliten is approximately 64 miles respectively 103 kilometers.
By car or train, the actual journey to Zliten is certainly longer, as only the direct route (as the crow flies) between Sīdī aş Şayd and Zliten has been calculated here.
Air line (approximately)
103 kilometers
56 nautical miles