I follow a Toronto Deals Facebook group, and a member posted a pretty amazing fare between Toronto YYZ and Denpasar DPS via Shanghai PVG on China Eastern (Skyteam). The fare is as low as $652 (ex. Sep 9 – Oct 15). This fare is not showing up on Google Flights or ITA Matrix. You have to search for your tickets on the China Eastern website.
This would be 19770 miles, giving a CPM of 3.2.