The calculated distance (air line) between Saint-Jean-de-Védas and Grenoble is approximately 145 miles respectively 233 kilometers.
By car or train, the actual journey to Grenoble is certainly longer, as only the direct route (as the crow flies) between Saint-Jean-de-Védas and Grenoble has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles