The calculated distance (air line) between Zürich (Kreis 1) and Fribourg is approximately 76 miles respectively 123 kilometers.
By car or train, the actual journey to Fribourg is certainly longer, as only the direct route (as the crow flies) between Zürich (Kreis 1) and Fribourg has been calculated here.
Air line (approximately)
123 kilometers
66 nautical miles