The calculated distance (air line) between Le Locle and Zürich (Kreis 7) is approximately 89 miles respectively 143 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 Le Locle and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
143 kilometers
77 nautical miles