The calculated distance (air line) between Wattwil and Zürich (Kreis 10) is approximately 28 miles respectively 46 kilometers.
By car or train, the actual journey to Zürich (Kreis 10) is certainly longer, as only the direct route (as the crow flies) between Wattwil and Zürich (Kreis 10) has been calculated here.
Air line (approximately)
46 kilometers
25 nautical miles