The calculated distance (air line) between Bolligen and Zürich (Kreis 10) is approximately 56 miles respectively 90 kilometers.
By car or train, the actual journey to Zürich (Kreis 10) is certainly longer, as only the direct route (as the crow flies) between Bolligen and Zürich (Kreis 10) has been calculated here.
Air line (approximately)
90 kilometers
48 nautical miles