The calculated distance (air line) between Strasshof an der Nordbahn and Graz is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Graz is certainly longer, as only the direct route (as the crow flies) between Strasshof an der Nordbahn and Graz has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles