The calculated distance (air line) between Lyss and Zürich (Kreis 9) is approximately 59 miles respectively 95 kilometers.
By car or train, the actual journey to Zürich (Kreis 9) is certainly longer, as only the direct route (as the crow flies) between Lyss and Zürich (Kreis 9) has been calculated here.
Air line (approximately)
95 kilometers
51 nautical miles