The calculated distance (air line) between Irbid and Wādī as Sīr is approximately 42 miles respectively 67 kilometers.
By car or train, the actual journey to Wādī as Sīr is certainly longer, as only the direct route (as the crow flies) between Irbid and Wādī as Sīr has been calculated here.
Air line (approximately)
67 kilometers
36 nautical miles