The calculated distance (air line) between Pamplona and Alcalá de Henares is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Alcalá de Henares is certainly longer, as only the direct route (as the crow flies) between Pamplona and Alcalá de Henares has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles