The calculated distance (air line) between Rockcliffe-Smythe and Mississauga is approximately 11 miles respectively 17 kilometers.
By car or train, the actual journey to Mississauga is certainly longer, as only the direct route (as the crow flies) between Rockcliffe-Smythe and Mississauga has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles