The calculated distance (air line) between Bahir Dar and Ādīs Zemen is approximately 45 miles respectively 72 kilometers.
By car or train, the actual journey to Ādīs Zemen is certainly longer, as only the direct route (as the crow flies) between Bahir Dar and Ādīs Zemen has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles