The calculated distance (air line) between Sassenage and Bourg-de-Péage is approximately 32 miles respectively 52 kilometers.
By car or train, the actual journey to Bourg-de-Péage is certainly longer, as only the direct route (as the crow flies) between Sassenage and Bourg-de-Péage has been calculated here.
Air line (approximately)
52 kilometers
28 nautical miles