The calculated distance (air line) between Frutigen and Zürich (Kreis 10) is approximately 69 miles respectively 112 kilometers.
By car or train, the actual journey to Zürich (Kreis 10) is certainly longer, as only the direct route (as the crow flies) between Frutigen and Zürich (Kreis 10) has been calculated here.
Air line (approximately)
112 kilometers
60 nautical miles