The calculated distance (air line) between Marmara Ereğlisi and Tekirdağ is approximately 23 miles respectively 37 kilometers.
By car or train, the actual journey to Tekirdağ is certainly longer, as only the direct route (as the crow flies) between Marmara Ereğlisi and Tekirdağ has been calculated here.
Air line (approximately)
37 kilometers
20 nautical miles