The calculated distance (air line) between Biel/Bienne and Zürich (Kreis 4) / Aussersihl is approximately 62 miles respectively 100 kilometers.
By car or train, the actual journey to Zürich (Kreis 4) / Aussersihl is certainly longer, as only the direct route (as the crow flies) between Biel/Bienne and Zürich (Kreis 4) / Aussersihl has been calculated here.
Air line (approximately)
100 kilometers
54 nautical miles