The calculated distance (air line) between ‘Alem T’ēna and Debre Birhan is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Debre Birhan is certainly longer, as only the direct route (as the crow flies) between ‘Alem T’ēna and Debre Birhan has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles