The calculated distance (air line) between Lyss and Zürich (Kreis 12) is approximately 64 miles respectively 103 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 Lyss and Zürich (Kreis 12) has been calculated here.
Air line (approximately)
103 kilometers
55 nautical miles