The calculated distance (air line) between Rüti and Zürich (Kreis 11) is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Zürich (Kreis 11) is certainly longer, as only the direct route (as the crow flies) between Rüti and Zürich (Kreis 11) has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles