The calculated distance (air line) between Saalfelden am Steinernen Meer and Meidling is approximately 170 miles respectively 273 kilometers.
By car or train, the actual journey to Meidling is certainly longer, as only the direct route (as the crow flies) between Saalfelden am Steinernen Meer and Meidling has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles