The calculated distance (air line) between Zürich (Kreis 6) / Unterstrass and Bulle is approximately 88 miles respectively 142 kilometers.
By car or train, the actual journey to Bulle is certainly longer, as only the direct route (as the crow flies) between Zürich (Kreis 6) / Unterstrass and Bulle has been calculated here.
Air line (approximately)
142 kilometers
76 nautical miles