The calculated distance (air line) between Frutigen and Zürich (Kreis 11) is approximately 71 miles respectively 114 kilometers.
By car or train, the actual journey to Zürich (Kreis 11) is certainly longer, as only the direct route (as the crow flies) between Frutigen and Zürich (Kreis 11) has been calculated here.
Air line (approximately)
114 kilometers
62 nautical miles