The calculated distance (air line) between Porrentruy and Zürich (Kreis 7) is approximately 70 miles respectively 113 kilometers.
By car or train, the actual journey to Zürich (Kreis 7) is certainly longer, as only the direct route (as the crow flies) between Porrentruy and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
113 kilometers
61 nautical miles