The calculated distance (air line) between San Agustín del Guadalix and Pamplona is approximately 179 miles respectively 289 kilometers.
By car or train, the actual journey to Pamplona is certainly longer, as only the direct route (as the crow flies) between San Agustín del Guadalix and Pamplona has been calculated here.
Air line (approximately)
289 kilometers
156 nautical miles