The calculated distance (air line) between Garachico and Los Llanos de Aridane is approximately 73 miles respectively 117 kilometers.
By car or train, the actual journey to Los Llanos de Aridane is certainly longer, as only the direct route (as the crow flies) between Garachico and Los Llanos de Aridane has been calculated here.
Air line (approximately)
117 kilometers
63 nautical miles