The calculated distance (air line) between Charnay-lès-Mâcon and Grenoble is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Grenoble is certainly longer, as only the direct route (as the crow flies) between Charnay-lès-Mâcon and Grenoble has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles