The calculated distance (air line) between Gimja Bēt Maryam and Debre Tabor is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Debre Tabor is certainly longer, as only the direct route (as the crow flies) between Gimja Bēt Maryam and Debre Tabor has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles