The calculated distance (air line) between Gossau and Zürich (Kreis 10) is approximately 35 miles respectively 57 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 Gossau and Zürich (Kreis 10) has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles