The calculated distance (air line) between Az̧ Z̧a‘āyin and Ar Rayyān is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Ar Rayyān is certainly longer, as only the direct route (as the crow flies) between Az̧ Z̧a‘āyin and Ar Rayyān has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles