The calculated distance (air line) between Çatalca and Marmara Ereğlisi is approximately 29 miles respectively 47 kilometers.
By car or train, the actual journey to Marmara Ereğlisi is certainly longer, as only the direct route (as the crow flies) between Çatalca and Marmara Ereğlisi has been calculated here.
Air line (approximately)
47 kilometers
25 nautical miles