The calculated distance (air line) between Saint-Priest-en-Jarez and Montpellier is approximately 131 miles respectively 211 kilometers.
By car or train, the actual journey to Montpellier is certainly longer, as only the direct route (as the crow flies) between Saint-Priest-en-Jarez and Montpellier has been calculated here.
Air line (approximately)
211 kilometers
114 nautical miles