The calculated distance (air line) between Armero-Guyabal and Medellín is approximately 100 miles respectively 160 kilometers.
By car or train, the actual journey to Medellín is certainly longer, as only the direct route (as the crow flies) between Armero-Guyabal and Medellín has been calculated here.
Air line (approximately)
160 kilometers
87 nautical miles