The magnetic north pole is south of the physical north pole. It's located in Canada north of Resolute Bay (CYRB). As far north as i flew personally was Resolute. Did medivacs out of Iqaluit (CCYFB) on Baffin Island - month in, month out - with a king air200 in the late 1990s and Resolute was a far north as we'd go. You can get large difference in variation in a short time depending on your routing so that's why flight planning is done in degrees true. In the 200 the company had installed (in addition to an astro compass) a Sperry HSi that was said to precess less than a degree per hour. Factor in convergence and you had a great tool for high arctic flying. When lined up on the runway before takeoff you'd adjust the HSI to the true heading of the runway. Other than Iqaluit which used degrees magnetic till 40nm out everything was degrees true. Id set my Sperry hsi in true and the F/Os in magnetic in case atc on departure needed to separate traffic by VOR separation. Once into airspace using degrees true he/she would then reset their hsi to true.
It was good flying there. Baffin is mountainous and back then before gps for approaches was commonly available most approaches were an NDB - the community airport NDBs back then were powerful.......though all used the gps for backup, wink, wink....if enough satellites were present. The last time I was up there was 2011 when employed by the fed gov't and as part of my duties when I could get out of the office was flying a king air 90 which was equipped well. Retired now.
Would have liked to seen Antarctica as the company had work there.