The calculated distance (air line) between Oberriet and Zürich (Kreis 7) is approximately 46 miles respectively 75 kilometers.
By car or train, the actual journey to Zürich (Kreis 7) is certainly longer, as only the direct route (as the crow flies) between Oberriet and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
75 kilometers
40 nautical miles