The calculated distance (air line) between Debre Birhan and Debre Tabor is approximately 182 miles respectively 293 kilometers.
By car or train, the actual journey to Debre Tabor is certainly longer, as only the direct route (as the crow flies) between Debre Birhan and Debre Tabor has been calculated here.
Air line (approximately)
293 kilometers
158 nautical miles