The calculated distance (air line) between Arbon and Zürich (Kreis 7) is approximately 41 miles respectively 66 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 Arbon and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
66 kilometers
36 nautical miles