The calculated distance (air line) between Ollon and Zürich (Kreis 12) is approximately 107 miles respectively 172 kilometers.
By car or train, the actual journey to Zürich (Kreis 12) is certainly longer, as only the direct route (as the crow flies) between Ollon and Zürich (Kreis 12) has been calculated here.
Air line (approximately)
172 kilometers
93 nautical miles