The calculated distance (air line) between Pasto and Santander de Quilichao is approximately 136 miles respectively 218 kilometers.
By car or train, the actual journey to Santander de Quilichao is certainly longer, as only the direct route (as the crow flies) between Pasto and Santander de Quilichao has been calculated here.
Air line (approximately)
218 kilometers
118 nautical miles