The calculated distance (air line) between Armero-Guyabal and Manizales is approximately 43 miles respectively 69 kilometers.
By car or train, the actual journey to Manizales is certainly longer, as only the direct route (as the crow flies) between Armero-Guyabal and Manizales has been calculated here.
Air line (approximately)
69 kilometers
37 nautical miles