The calculated distance (air line) between Debre Birhan and Tulu Bolo is approximately 114 miles respectively 183 kilometers.
By car or train, the actual journey to Tulu Bolo is certainly longer, as only the direct route (as the crow flies) between Debre Birhan and Tulu Bolo has been calculated here.
Air line (approximately)
183 kilometers
99 nautical miles