The calculated distance (air line) between Saint-Julien-en-Genevois and Grenoble is approximately 69 miles respectively 111 kilometers.
By car or train, the actual journey to Grenoble is certainly longer, as only the direct route (as the crow flies) between Saint-Julien-en-Genevois and Grenoble has been calculated here.
Air line (approximately)
111 kilometers
60 nautical miles