The calculated distance (air line) between Ecublens and Zürich (Kreis 9) is approximately 108 miles respectively 174 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 Ecublens and Zürich (Kreis 9) has been calculated here.
Air line (approximately)
174 kilometers
94 nautical miles