The calculated distance (air line) between Stuttgart and Oberwinterthur (Kreis 2) / Talacker is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Oberwinterthur (Kreis 2) / Talacker is certainly longer, as only the direct route (as the crow flies) between Stuttgart and Oberwinterthur (Kreis 2) / Talacker has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles