The calculated distance (air line) between Aksum and Ādīs Zemen is approximately 152 miles respectively 245 kilometers.
By car or train, the actual journey to Ādīs Zemen is certainly longer, as only the direct route (as the crow flies) between Aksum and Ādīs Zemen has been calculated here.
Air line (approximately)
245 kilometers
132 nautical miles