The calculated distance (air line) between Zürich (Kreis 3) and Fribourg is approximately 74 miles respectively 120 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 3) and Fribourg has been calculated here.
Air line (approximately)
120 kilometers
65 nautical miles