The calculated distance (air line) between Marmara Ereğlisi and Şişli is approximately 54 miles respectively 87 kilometers.
By car or train, the actual journey to Şişli is certainly longer, as only the direct route (as the crow flies) between Marmara Ereğlisi and Şişli has been calculated here.
Air line (approximately)
87 kilometers
47 nautical miles