The calculated distance (air line) between San Lucas ( Pueblo Nuevo de Colan) and Piura is approximately 35 miles respectively 57 kilometers.
By car or train, the actual journey to Piura is certainly longer, as only the direct route (as the crow flies) between San Lucas ( Pueblo Nuevo de Colan) and Piura has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles