The calculated distance (air line) between Stuttgart and Horgen / Horgen (Dorfkern) is approximately 109 miles respectively 175 kilometers.
By car or train, the actual journey to Horgen / Horgen (Dorfkern) is certainly longer, as only the direct route (as the crow flies) between Stuttgart and Horgen / Horgen (Dorfkern) has been calculated here.
Air line (approximately)
175 kilometers
94 nautical miles