The calculated distance (air line) between Bouc-Bel-Air and Grenoble is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Grenoble is certainly longer, as only the direct route (as the crow flies) between Bouc-Bel-Air and Grenoble has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles