The calculated distance (air line) between Saint-Priest-en-Jarez and Grenoble is approximately 68 miles respectively 110 kilometers.
By car or train, the actual journey to Grenoble is certainly longer, as only the direct route (as the crow flies) between Saint-Priest-en-Jarez and Grenoble has been calculated here.
Air line (approximately)
110 kilometers
59 nautical miles