The calculated distance (air line) between Al Bukayrīyah and Az Zulfī is approximately 73 miles respectively 117 kilometers.
By car or train, the actual journey to Az Zulfī is certainly longer, as only the direct route (as the crow flies) between Al Bukayrīyah and Az Zulfī has been calculated here.
Air line (approximately)
117 kilometers
63 nautical miles