The calculated distance (air line) between Zürich (Kreis 6) and Fribourg is approximately 77 miles respectively 124 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 6) and Fribourg has been calculated here.
Air line (approximately)
124 kilometers
67 nautical miles