The calculated distance (air line) between Buşayrā and Wādī as Sīr is approximately 85 miles respectively 137 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 Buşayrā and Wādī as Sīr has been calculated here.
Air line (approximately)
137 kilometers
74 nautical miles