The calculated distance (air line) between Ollon and Zürich (Kreis 9) is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Zürich (Kreis 9) is certainly longer, as only the direct route (as the crow flies) between Ollon and Zürich (Kreis 9) has been calculated here.
Air line (approximately)
166 kilometers
89 nautical miles