The calculated distance (air line) between Biel/Bienne and Zürich (Kreis 7) is approximately 65 miles respectively 104 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 Biel/Bienne and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
104 kilometers
56 nautical miles