The calculated distance (air line) between Bursa and Büyükçekmece is approximately 62 miles respectively 100 kilometers.
By car or train, the actual journey to Büyükçekmece is certainly longer, as only the direct route (as the crow flies) between Bursa and Büyükçekmece has been calculated here.
Air line (approximately)
100 kilometers
54 nautical miles