The calculated distance (air line) between Zürich (Kreis 12) / Schwamendingen-Mitte and Vernier is approximately 143 miles respectively 231 kilometers.
By car or train, the actual journey to Vernier is certainly longer, as only the direct route (as the crow flies) between Zürich (Kreis 12) / Schwamendingen-Mitte and Vernier has been calculated here.
Air line (approximately)
231 kilometers
125 nautical miles