The calculated distance (air line) between Nidau and Zürich (Kreis 7) is approximately 65 miles respectively 105 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 Nidau and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
105 kilometers
57 nautical miles