The calculated distance (air line) between El Oued and Oum el Bouaghi is approximately 175 miles respectively 281 kilometers.
By car or train, the actual journey to Oum el Bouaghi is certainly longer, as only the direct route (as the crow flies) between El Oued and Oum el Bouaghi has been calculated here.
Air line (approximately)
281 kilometers
152 nautical miles