The calculated distance (air line) between Oberriet and Zürich (Kreis 2) is approximately 49 miles respectively 79 kilometers.
By car or train, the actual journey to Zürich (Kreis 2) is certainly longer, as only the direct route (as the crow flies) between Oberriet and Zürich (Kreis 2) has been calculated here.
Air line (approximately)
79 kilometers
43 nautical miles