The calculated distance (air line) between Nidau and Zürich (Kreis 12) is approximately 66 miles respectively 105 kilometers.
By car or train, the actual journey to Zürich (Kreis 12) is certainly longer, as only the direct route (as the crow flies) between Nidau and Zürich (Kreis 12) has been calculated here.
Air line (approximately)
105 kilometers
57 nautical miles