Orienteering 1:40:00 
Years (15?) since I last did a black/M21 course....
From a running perspective, felt pretty good, felt like I was going at a decent pace all the way.
Nav on the other hand was shoddy, to the extent that loads of controls where I know ran an extra 100m or so don't really show up as "off trend" on Splitbrowser...lost a good 20mins overall i think.... with multi-min losses at 6 and 29.
on the positive side... 4,5,8,9,11,12,13,14,15,16,20,21,26,28,30 and 31 were ok, and it was a good run training day, which really was the goal.