The calculated distance (air line) between Zürich (Kreis 9) / Altstetten and Wetzikon is approximately 15 miles respectively 25 kilometers.
By car or train, the actual journey to Wetzikon is certainly longer, as only the direct route (as the crow flies) between Zürich (Kreis 9) / Altstetten and Wetzikon has been calculated here.
Air line (approximately)
25 kilometers
13 nautical miles