The calculated distance (air line) between Arba Minch and Kibre Mengist is approximately 99 miles respectively 159 kilometers.
By car or train, the actual journey to Kibre Mengist is certainly longer, as only the direct route (as the crow flies) between Arba Minch and Kibre Mengist has been calculated here.
Air line (approximately)
159 kilometers
86 nautical miles